Notably, the value ranges between the values 2.57 and 2.58. Thus, we add the two numbers and divide by two; Thus, the z score for the 99% confidence interval is 2.575. Z score for 90% confidence interval. Calculating the Z score for a 90% confidence interval, we have; We check the value of probability 0.95 in the positive z score table. To find a 95% confidence interval for the mean based on the sample mean 98.249 and sample standard deviation 0.733, first find the 0.025 critical value t * for 129 degrees of freedom. This value is approximately 1.962, the critical value for 100 degrees of freedom (found in Table E in Moore and McCabe). Finding the critical value t* for a desired confidence level. Emilio took a random sample of n = 12 giant Pacific octopi and tracked them to calculate their mean lifespan. Their lifespans were roughly symmetric with a mean of x ¯ = 4 years and a standard deviation of s x = 0.5 years. He wants to use this data to construct a t interval for the ...Find the critical values for a 98% confidence interval using the chi-square distribution with 25 degrees of freedom. Round the answers to three decimal places. Round the answers to three decimal places.The confidence level refers to the long-term success rate of the method, that is, how often this type of interval will capture the parameter of interest. A specific confidence interval gives a range of plausible values for the parameter of interest. Let's look at a few examples that demonstrate how to interpret confidence levels and confidence ...The confidence Interval is calculated using the following formula. Confidence Interval = ( x̄ – z * ơ / √n) to ( x̄ + z * ơ / √n) The overall calculation for the Upper Limit and Lower Limit is given below. For 90%. Therefore, the Confidence Interval at a 90% confidence level is 3.22 to 3.38. For 95%.Confidence interval calculator finds the confidence range in which the population mean may lie. The results are detailed and clear. The confidence interval for the population …The critical value for a 95% confidence interval is 1.96, where (1-0.95)/2 = 0.025. A 95% confidence interval for the unknown mean is ( (101.82 - (1.96*0.49)), (101.82 + …Jul 29, 2020 ... When calculating the margin of error, E, for a confidence interval, you will need to find a z-score (different textbooks either call this ...Last week, Gore REDUCE study, a randomized open-label trial with a median duration of follow-up of 5.0 years [4.8 to 5.2] demonstrated that 1.8% of patients with PFO closure had re...Feb 2, 2019 · This calculator finds the z critical value associated with a given significance level. Simply fill in the significance level below, then click the “Calculate” button. Significance level. z critical value (right-tailed): 1.645. z critical value (two-tailed): +/- 1.960. For a 95% confidence level, the Z-score is approximately 1.96. This means that if your data is normally distributed, about 95% of values are within 1.96 standard deviations of the mean. Similarly, for a 99% confidence level, the Z-score is approximately 2.576. Hence, the larger the Z-score, the larger your confidence interval will be.t -Interval for a Population Mean. The formula for the confidence interval in words is: Sample mean ± ( t-multiplier × standard error) and you might recall that the formula for the confidence interval in notation is: x ¯ ± t α / 2, n − 1 ( s n) Note that: the " t-multiplier ," which we denote as t α / 2, n − 1, depends on the sample ...The point estimate you are constructing the confidence interval for; The critical values for the test statistic; The standard deviation of the sample; ... (95% CI = 34.02, 35.98).” One place that confidence intervals are frequently used is in graphs. When showing the differences between groups, or plotting a linear regression, researchers ...where zc is a critical value from the normal distribution (see below) and n is the sample size. Common values of zc are: Confidence Level, Critical Value. 90 ...Figure 7-5. In the following Figure 7-6, confidence intervals were simulated using a 90% confidence level and then again using the 99% confidence level. Each confidence level was run 100 times with sample sizes of n = 30, then again using a sample size of n = 100, holding all other variables constant. Figure 7-6.Critical values ( z * -values) are an important component of confidence intervals (the statistical technique for estimating population parameters). The z * -valQuestion: Find the critical value for the following situations. a) a 98% confidence interval based on df = 24. b) a 95% confidence interval based on df = 78. Click the icon to view the t-table. a) What is the critical value of t for a 98% confidence interval with df = 24? (Round to two decimal places as needed.) b) What is the critical value of ...Jul 17, 2023 · A confidence interval for a mean is a range of values that is likely to contain a population mean with a certain level of confidence. We use the following formula to calculate a confidence interval for a mean: Confidence Interval = x +/- t* (s/√n) where: x: sample mean. t: the t critical value. s: sample standard deviation. Use this calculator for critical values to easily convert a significance level to its corresponding Z value, T score, F-score, or Chi-square value. Outputs the critical region …Dec 26, 2012 ... ... K views · 4:37 · Go to channel · Find Critical Value Z for Confidence Intervals with TI-84. Math and Stats Help•22K views · 7:39 &m...Find the critical value tα/2 t α / 2 needed to construct a 98% 98 % confidence interval. I have tried everything I know how to figure out this t value for 98% …Math can be a challenging subject for many students, especially at a young age. As 2nd graders begin to explore more complex mathematical concepts, it’s important to provide them w... To find a 95% confidence interval for the mean based on the sample mean 98.249 and sample standard deviation 0.733, first find the 0.025 critical value t * for 129 degrees of freedom. This value is approximately 1.962, the critical value for 100 degrees of freedom (found in Table E in Moore and McCabe). A critical value often represents a rejection region cut-off value for a hypothesis test – also called a zc value for a confidence interval. For confidence intervals and two-tailed z …Find a confidence interval for a sample for the true mean weight of all foot surgery patients. Find a 95% CI. Step 1: Subtract 1 from your sample size. 10 – 1 = 9. This gives you degrees of freedom, which you’ll need in step 3. Step 2: Subtract the confidence level from 1, then divide by two. (1 – .95) / 2 = .025.Powerful confidence interval calculator online: calculate two-sided confidence intervals for a single group or for the difference of two groups. One sample and two sample confidence interval calculator with CIs for difference of proportions and difference of means. Binomial and continuous outcomes supported. Information on what a …Question: Find the critical value for the following situations. a) a 98% confidence interval based on df = 24. b) a 95% confidence interval based on df = 78. Click the icon to view the t-table. a) What is the critical value of t for a 98% confidence interval with df = 24? (Round to two decimal places as needed.) b) What is the critical value of ...We can use the following formula to calculate a confidence interval for the value of β1, the value of the slope for the overall population: Confidence Interval for β1: b1 ± t1-α/2, n-2 * se (b1) where: b1 = Slope …Mar 26, 2016 · Critical values ( z *-values) are an important component of confidence intervals (the statistical technique for estimating population parameters). The z *-value This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Question: Determine the critical value for a 98% confidence interval when the sample size is 12 for the t‑distribution. Enter the positive critical value rounded to 3 decimal places. t = ?The middle part, inside of the critical values, must be the confidence level. The two tails must combine to be α, so each tail is α/2. Hence, for a 95% confidence interval, instead of looking up 0.05 or 0.95, we want to look up 0.25 or 0.975 in the Z-table, and get the Z critical values from those.For a confidence level of 98%, find the critical value for a confidence interval on a one-sample proportion. Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018. 18th Edition. ISBN: 9780079039897.What is the z value for a 90, 95, and 99 percent confidence interval? Statistics Inference with the z and t Distributions z Confidence intervals for the Mean. 1 Answer VSH ... See all questions in z Confidence intervals for the Mean Impact of this question. 215291 views around the world ...Dina Wadia was born on the intervening night of Aug. 14 and 15 in 1919—ironically, Pakistan, “her sibling,” was born exactly three decades later to the date. Dina Wadia, the 98-yea...Confidence Level: z: 0.70: 1.04: 0.75: 1.15: 0.80: 1.28: 0.85: 1.44: 0.90: 1.645: 0.92: 1.75: 0.95: 1.96: 0.96: 2.05: 0.98: 2.33: 0.99: 2.58Mar 26, 2023 · If not, for n ≥ 30 it is generally safe to approximate σ by the sample standard deviation s. Large Sample 100(1 − α)% Confidence Interval for a Population Mean. If σ is known: ˉx ± zα / 2( σ √n) If σ is unknown: ˉx ± zα / 2( s √n) A sample is considered large when n ≥ 30. As mentioned earlier, the number. (2 points) Find the critical value zα/2 for 98% confidence interval. Drawing, Labeling, Shading, and TI Command Required. 5. (2 points) Find the critical value tα/2 for 90% confidence interval with df = 99. Drawing, Labeling, Shading, and TI Command Required. 5. 6. Consider the confidence interval 0.568 < p < 0.724, (a) (2 points) Find the sampleYou can also use these critical z*-values for hypothesis tests in which the test statistic follows a Z-distribution.If the absolute value of the test statistic is greater than the corresponding z*-value, then reject the null hypothesis. To find a 95% confidence interval for the mean based on the sample mean 98.249 and sample standard deviation 0.733, first find the 0.025 critical value t * for 129 degrees of freedom. This value is approximately 1.962, the critical value for 100 degrees of freedom (found in Table E in Moore and McCabe). This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Question: Find the critical values for a 98% confidence interval using the chi-square distribution with 5 degrees of freedom. Round the answers to three decimal places. The critical values are and. Question: Find the critical value for a 98% confidence interval when the population standard deviation is known and the sample size of n = 30 is used. Show transcribed image text There’s just one step to solve this. Enter your desired confidence level C: Enter the degrees of freedom: %. Find the critical t value for the confidence interval with the online calculator. Find the right critical value for 98% confidence interval for ? with n = 20. Find the left critical value for 90% confidence interval for ? with n = 15. Since these two problems are so similar, I thought I'd include them together. Show transcribed image text. There are 3 steps to solve this one.The area in the left tail (AL) is found by subtracting the degree of confidence from 1 and then dividing this by 2. AL = 1 − degree of confidence 2. For example, substituting into the formula for a 95% confidence interval produces. AL = 1 − 0.95 2 = 0.025. The critical Z value for an area to the left of 0.025 is -1.96. Question: Determine the critical values for the confidence interval for the population standard deviation from the given values. Round your answers to three decimal places n=8 and c=0.95 Answer How to enter your answer (opens in new window) Keyboard Shortcuts and. There are 2 steps to solve this one. (2 points) Find the critical value zα/2 for 98% confidence interval. Drawing, Labeling, Shading, and TI Command Required. 5. (2 points) Find the critical value tα/2 for 90% confidence interval with df = 99. Drawing, Labeling, Shading, and TI Command Required. 5. 6. Consider the confidence interval 0.568 < p < 0.724, (a) (2 points) Find the sampleConfidence interval calculator helps to calculate confidence interval for the population mean of a given sample by using mean, standard deviation, and raw data. ... The z score for 99 percent confidence level is 2.576 = 2.576 x 2.98 = 7.798. Step 6: Find the lower and upper ... researchers, and statisticians to find the critical values of t and ...Find the critical value z, necessary to form a confidence interval at the level of confidence shown below. c=0.96 (Round to two decimal places as needed.) Construct the confidence interval for the population mean c=0.98, X= 16.9,0 = 6.0, and n=90 A 98% confidence interval for p is D. (Round to one decimal place as needed.)Question: 27) What would be the critical values of Z for 98% confidence interval for a two-tailed test ? A) +/- 2.33 B) +/- 1.96 C) +/- 1.64 D) +/- 2.55 45) The I.Q. scores of 19,000 college students are approximately normally distributed with a μ = 125 and σ = 14. ... What would be the critical values of Z for 98% confidence interval for a ...Construct a 98% confidence interval to estimate the mean commute time in the population of all Atlanta residents. ... multiplier by constructing a z distribution to find the values that separate the middle 99% from the outer 1%:-2. 5 7 583 2. 5 7 583 0. 0 0 5 0. 0 0 5 Dist r ibution Plot Normal, Mean = 0, S t D e v=1 0.0 0. 1 0. 2 0. 3 0.4 0 X ...Are you planning to pursue a career in law? If so, you’re probably aware of the intense competition that awaits you in the LLB entrance exams. These exams are designed to test your...A critical value often represents a rejection region cut-off value for a hypothesis test – also called a zc value for a confidence interval. For confidence intervals and two-tailed z-tests, you can use the zTable to determine the critical values (zc). Example. Find the critical values for a 90% Confidence Interval. NOTICE: A 90% Confidence ... Enter your desired confidence level C: Enter the degrees of freedom: %. Find the critical t value for the confidence interval with the online calculator. In today’s digital age, online education has become increasingly popular, and this trend extends to the field of mathematics. Online maths education offers a wide range of benefits...The confidence Interval is calculated using the following formula. Confidence Interval = ( x̄ – z * ơ / √n) to ( x̄ + z * ơ / √n) The overall calculation for the Upper Limit and Lower Limit is given below. For 90%. Therefore, the Confidence Interval at a 90% confidence level is 3.22 to 3.38. For 95%.This lesson explains what a confidence interval is and explains how to construct and interpret confidence intervals. Includes sample problem with solution. Stat Trek. ... The critical value is the t statistic having 999 degrees of freedom and a cumulative probability equal to 0.975. From the t Distribution ... Question: Find the critical value, zα/2, used for constructing a 97% confidence interval for population proportion μ. 2. Find the critical value, tα/2, used for constructing a 98% confidence interval for population proportion μ with a sample of 20 individuals. Our 90% confidence interval calculator will help you determine that range in the blink of an eye. ... (0.90) Z (0.90) is the z-score for 90% confidence interval. It is a fixed value that we take from the statistical table. Z-score for …You can also use these critical z*-values for hypothesis tests in which the test statistic follows a Z-distribution.If the absolute value of the test statistic is greater than the corresponding z*-value, then reject the null hypothesis. Question: Determine the critical values for the confidence interval for the population standard deviation from the given values. Round your answers to three decimal places n=8 and c=0.95 Answer How to enter your answer (opens in new window) Keyboard Shortcuts and. There are 2 steps to solve this one. To find a 95% confidence interval for the mean based on the sample mean 98.249 and sample standard deviation 0.733, first find the 0.025 critical value t * for 129 degrees of freedom. This value is approximately 1.962, the critical value for 100 degrees of freedom (found in Table E in Moore and McCabe). Find the critical value z, necessary to form a confidence interval at the level of confidence shown below. c=0.96 (Round to two decimal places as needed.) Construct the confidence interval for the population mean c=0.98, X= 16.9,0 = 6.0, and n=90 A 98% confidence interval for p is D. (Round to one decimal place as needed.)The 95% confidence interval structure provides guidance in how to make intervals with new confidence levels. Below is a general 95% confidence interval for a point estimate that comes from a nearly normal distribution: point estimate ± 1.96 × SE (4.3.4) (4.3.4) point estimate ± 1.96 × S E. There are three components to this interval: the ... For confidence intervals, they help calculate the upper and lower limits. In both cases, critical values account for uncertainty in sample data you’re using to make inferences about a population. They answer the following questions: How different does the sample estimate need to be from the null hypothesis to be statistically significant? In this video, Professor Curtis uses StatCrunch to demonstrate how to find degrees of freedom, critical values, and a confidence interval estimate for standa...Expert-verified. a) Critical Value Based on the information provided, the significance level is α=0.08, therefore the critical value for this confidence interval is Zc =1.7507. This can be found by either using excel or the Z distribut …. 2 es 7.For a two-tailed 95% confidence interval, the alpha value is 0.025, and the corresponding critical value is 1.96. This means that to calculate the upper and lower bounds of the confidence interval, we can take the mean ±1.96 standard deviations from the mean.About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...The middle part, inside of the critical values, must be the confidence level. The two tails must combine to be α, so each tail is α/2. Hence, for a 95% confidence interval, instead of looking up 0.05 or 0.95, we want to look up 0.25 or 0.975 in the Z-table, and get the Z critical values from those.Example 7.4.3. You buy in bulk 12 bags of dog kibble and weigh each bag. The following data is the weight in pounds. (a) Find the confidence interval for the standard deviation at a 90% level of confidence. (b) Give an interpretation of your confidence interval. Answers: (a) First find the critical values. Step 1. Find the critical value a/2 needed to construct a confidence interval with level 98%. Round the answer to at least two decimal places. The critical value for the 98% confidence level is х 5 5. 0 t critical value-t critical value t curve Central area t critical values Confidence area captured: 0.90 0.95 0.98 0.99 Confidence level: 90% 95% 98% 99% 1 6.31 12. ...The point estimate you are constructing the confidence interval for; The critical values for the test statistic; The standard deviation of the sample; ... (95% CI = 34.02, 35.98).” One place that confidence intervals are frequently used is in graphs. When showing the differences between groups, or plotting a linear regression, researchers ...What is the critical value t∗ start superscript, times, end superscript for constructing a 98%, percent confidence interval for a mean with 13 degrees of freedom? 2.650 What is the critical value t* , start superscript, times, end superscript for constructing a 90% percent confidence interval for a mean from a sample size of n=18, equals, 18 ... The confidence level refers to the long-term success rate of the method, that is, how often this type of interval will capture the parameter of interest. A specific confidence interval gives a range of plausible values for the parameter of interest. Let's look at a few examples that demonstrate how to interpret confidence levels and confidence ... This calculator finds the Chi-Square critical value for a given degrees of freedom and significance level. Degrees of freedom. Significance level. X 2 critical value = 22.36203. ... Prev Confidence Interval for a Correlation Coefficient. Next One Sample t-test: Definition, Formula, and Example. Leave a Reply Cancel reply.You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Question: 9. Find the critical value Za/2 for (a) 98% confidence interval. Draw and Label. (b) 88% confidence interval. Draw and Label. Here’s the best way to solve it.Don't come off like a jerk. Find out where the line lies between confidence and arrogance. Trusted by business builders worldwide, the HubSpot Blogs are your number-one source for ...Confidence Interval for Proportion p is the population proportion (of a certain characteristic) To find a C% confidence interval, we need to know the z-score of the central C% in a standard-normal distribution. Call this 'z' Our confidence interval is p±z*SE(p) p is the sample proportion SE(p)=√(p(1-p)/n ^ ^ ^ ^With 98% confidence interval and n = 25. Find left critical value for Tinterval. Group of answer choices. A. -2.326. ... C. -2.326. D. -2.492. 3. Find the left critical value for 95% confidence interval for σ with n = 41. Group of answer choices. A. 59.342. B. 26.509. C. 55.758. D. 24.433. 4. Find the right critical value for 95% confidence ...What is the critical value t∗ start superscript, times, end superscript for constructing a 98%, percent confidence interval for a mean with 13 degrees of freedom? 2.650 What is the critical value t* , start superscript, times, end superscript for constructing a 90% percent confidence interval for a mean from a sample size of n=18, equals, 18 ...Powerful confidence interval calculator online: calculate two-sided confidence intervals for a single group or for the difference of two groups. One sample and two sample confidence interval calculator with CIs for difference of proportions and difference of means. Binomial and continuous outcomes supported. Information on what a …The confidence Interval is calculated using the following formula. Confidence Interval = ( x̄ – z * ơ / √n) to ( x̄ + z * ơ / √n) The overall calculation for the Upper Limit and Lower Limit is given below. For 90%. Therefore, the Confidence Interval at a 90% confidence level is 3.22 to 3.38. For 95%.For a 95% confidence level, the Z-score is approximately 1.96. This means that if your data is normally distributed, about 95% of values are within 1.96 standard deviations of the mean. Similarly, for a 99% confidence level, the Z-score is approximately 2.576. Hence, the larger the Z-score, the larger your confidence interval will be.2.43. Find the critical value zα/2 needed to construct a (n) 99.6% confidence interval. 2.88. Find the critical value zα/2 needed to construct a (n) 98.9% confidence interval. 2.54. Find the critical value zα/2 needed to construct a (n) 83% confidence interval. 1.37. Find the point estimate for the given values of x and n.x = 75, n = 167. 0.19.Want to know how to look confident during a presentation? Visit HowStuffWorks to learn how to look confident during a presentation. Advertisement When it comes to giving a presenta...Question: When finding an 98% confidence interval, what is the critical value for confidence level? (Give your answer to two decimal places.) zc= (a) Find a 98% confidence interval for the population mean blood plasma volume in male firefighters.We all know people who sing their own praises at every work or social opportunity. You may sometimes wonder if We all know people who sing their own praises at every work or social...A.) 2 B.) 1 C.) 1 D.) 2. ChatGPT To find the critical t-value for a given confidence level and degrees of freedom, you can use a t- table or statistical software. For a 98% confidence interval with 24 degrees of freedom, you need to find the t-value that corresponds to 1% in each tail, as the confidence interval is two-tailed. To find a 95% confidence interval for the mean based on the sample mean 98.249 and sample standard deviation 0.733, first find the 0.025 critical value t * for 129 degrees of freedom. This value is approximately 1.962, the critical value for 100 degrees of freedom (found in Table E in Moore and McCabe).
If we want to be 95% confident, we need to build a confidence interval that extends about 2 standard errors above and below our estimate. More precisely, it's actually 1.96 standard errors. This is called a critical value (z*). We can calculate a critical value z* for any given confidence level using normal distribution calculations. . Lotrimin for toenail fungus
This calculator finds the z critical value associated with a given significance level. Simply fill in the significance level below, then click the “Calculate” button. Significance level. z critical value (right-tailed): 1.645. z critical value (two-tailed): +/- 1.960.The number you see is the critical value (or the t -value) for your confidence interval. For example, if you want a t -value for a 90% confidence interval when you have 9 degrees of freedom, go to the bottom of the table, find the column for 90%, and intersect it with the row for df = 9. This gives you a t- value of 1.833 (rounded).Here’s the best way to solve it. Solution : (a) Degrees of freedom = df = 18 At 98 …. Find the critical value t' for the following situations. a) a 98% confidence interval based on df = 18. b) a 90% confidence interval based on df = 81. Click the icon to view the t-table.Find the critical value tα/2 t α / 2 needed to construct a 98% 98 % confidence interval. I have tried everything I know how to figure out this t value for 98% …Confidence Interval for a Standard Deviation: Formula. We use the following formula to calculate a confidence interval for a mean: Confidence Interval = [√(n-1)s 2 /X 2 α/2, √(n-1)s 2 /X 2 1-α/2] where: n: sample size; s: sample standard deviation; X 2: Chi-square critical value with n-1 degrees of freedom. Confidence Interval for a ...To get the 90% Confidence Interval, we need to subtract and add E to the sample proportion. sample prop – E < population prop < sample prop + E .67 – .07 < population proportion < .67 + .07In this video, I show how to find the critical z-values using the TI-84 graphing calculator.If you want to view all of my videos in a nicely organized way, p... t -Interval for a Population Mean. The formula for the confidence interval in words is: Sample mean ± ( t-multiplier × standard error) and you might recall that the formula for the confidence interval in notation is: x ¯ ± t α / 2, n − 1 ( s n) Note that: the " t-multiplier ," which we denote as t α / 2, n − 1, depends on the sample ... Gainers Unique Fabricating, Inc. (NYSE:UFAB) jumped 56.3% to close at $0.8205 on Tuesday. Unique Fabricating posted a Q3 loss of $0.90 per share... Indices Commodities Currencies...(2 points) Find the critical value zα/2 for 98% confidence interval. Drawing, Labeling, Shading, and TI Command Required. 5. (2 points) Find the critical value tα/2 for 90% confidence interval with df = 99. Drawing, Labeling, Shading, and TI Command Required. 5. 6. Consider the confidence interval 0.568 < p < 0.724, (a) (2 points) Find the sampleFor example, if 100 confidence intervals are computed at a 95% confidence level, it is expected that 95 of these 100 confidence intervals will contain the true value of the …If you're facing a statistics problem finding a 90% confidence interval for your sample, this site is the right place! Our 90% confidence interval calculator will help you determine that range in the blink of an eye. Read on to find out: How to find a 90% confidence interval; What is z-score for 90% confidence interval (Z(0.90)); andWhat critical value would be appropriate for a 98% confidence interval on a mean where s is unknown if the sample size is 10 and the population is normally distributed? LA) 2.8214 B) 2.7638 C) 1.3830 D) 2.3263 15. 22/2 = 1.82; a= A) 0.9100. Question: Determine the critical values for the confidence interval for the population standard deviation from the given values. Round your answers to three decimal places n=8 and c=0.95 Answer How to enter your answer (opens in new window) Keyboard Shortcuts and. There are 2 steps to solve this one. Interval notation is a method used to write the domain and range of a function. The open parentheses indicate that the value immediately to the parentheses’ left or right is not in...A bond’s coupon period is the interval between interest payments. Generally speaking, floating-rate bonds normally reset on the payment date. Because coupon rates on floating-rate ...Figure 7-5. In the following Figure 7-6, confidence intervals were simulated using a 90% confidence level and then again using the 99% confidence level. Each confidence level was run 100 times with sample sizes of n = 30, then again using a sample size of n = 100, holding all other variables constant. Figure 7-6.1. A sample of size n = 22 n = 22 is drawn from a normal population. Find the critical value tα/2 t α / 2 needed to construct a 98% 98 % confidence interval. I have tried everything I know how to figure out this t value for 98% 98 % confidence interval and I cannot figure it out given so little information. So from my notes I the value of t ....
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