find the critical t-value for construct a confidence interval about a population mean at the given level of confidence for the given sample size, n.
(a) 96% confidence; n = 26
please show work, I am confused and unsure how to solve these problems
find the critical t-value for construct a confidence interval about a population mean at the given...
Find the t critical value ta/2 to calculate a 95% confidence interval for a population mean when the sample size is 17. and the real value tar to kolesa 250w contence mentor a population meanwhen the samples Find the t critical value ta/2 to calculate a 9096 confidence interval for a population mean when the sample size is 25. 23
ne t distribution to construct a confidence interval for the n mean when the underlying population standard deviation is n. Under the assumption that the population is normally d, find ta/2, de for the following scenarios. (You may find it reference the t table. Round your answers to 3 decimal % confidence level and a sample of 14 observations. % confidence level and a sample of 14 observations. $ confidence level and a sample of 26 observations. % confidence level...
Find the critical value t/α2 needed to construct a confidence interval of the given level with the given sample size. Round the answers to three decimal places. Part 1 of 4 (a) For level 95% and sample size 7 Criticalvalue=0 Part 2 of 4 (b) For level 98% and sample size 12 Criticalvalue= Part 3 of 4 (c) For level 99% and sample size 27 Criticalvalue= Part 4 of 4 (d) For level 98% and sample size 14 Criticalvalue=
A through D please Objective 4: Construct and Interpret a Confidence Interval for a Population Mean 9.2 Estimating a Population Mean 9.2.17 O of 1 Point Question Help A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 114, and the sample standard deviation, s, is found to be 10. (a) Construct an 80% confidence interval about if the sample size, n, is 23. (b) Construct...
X6.2.9-TConstruct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed c = 0.90, x̅ = 12.9, s = 4.0, n = 9 The 90% confidence interval using a t-distribution is 6.2.17-T In a random sample of 26 people, the mean commute time to work was 34.8 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 98% confidence interval for the population mean μ...
Answers only is okay! Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.99, x=13.1, s=3.0, n= 6 Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.95, x=14.5, s=0.55, n= 15 Use the given confidence interval to find the margin of error and the sample mean. (12.7,19.9The sample mean is In a random sample of 18 people, the mean...
Answers only is fine! Find the critical value zc necessary to form a confidence interval at the level of confidence shown below. c=0.92 Find the margin of error for the given values of c, σ, and n. c = 0.95, σ =2.4, n = 8.1 Level of Confidence. zc 90% 1.645 95% 1.96 99% 2.575 Construct the confidence interval for the population mean μ. c=0.98, x=9.5, σ=0.3, and n= 52 Construct the confidence interval for the population mean μ. c=0.95, x=16.7, σ=6.0, and n=...
We use the t distribution to construct a confidence interval for the population mean when the underlying population standard deviation is not known. Under the assumption that the population is normally distributed, find ta/2,df for the following scenarios. (You may find it useful to reference the table. Round your answers to 3 decimal places.) ta/2,df a. A 95% confidence level and a sample of 14 observations. b. A 99% confidence level and a sample of 14 observations. A 95% confidence...
ol. Find the critical value a/2 needed to construct a confidence interval of the given level with the given sample size. Round the answers to three decimal places. Part 1 of 4 (a) For level 98% and sample size 8 Critical value = х Part 2 of 4 (b) For level 99% and sample size 13 Critical value = Part 3 of 4 (c) For level 99.5% and sample size 28 Critical value = Part 4 of 4 (d) For...
Confidence Intervals 9. Construct a 95 % confidence interval for the population mean, . In a random sample of 32 computers, the mean repair cost was $143 with a sample standard deviation of $35 (Section 6.2) Margin of error, E. <με. Confidence Interval: O Suppose you did some research on repair costs for computers and found that the population standard deviation, a,- $35. Use the normal distribution to construct a 95% confidence interval the population mean, u. Compare the results....