If X=99​, S=13​, and n=64​, and assuming that the population is normally​ distributed, construct a 95% confidence interval estimate of the population​ mean, μ. ​(Round to two decimal places as​ needed.)

If X=142​, σ=20​, and n=36​,construct a 99​% confidence interval estimate of the population​ mean, μ. (Round to two decimal places as​ needed.)

If X=91, S=21 and n=16​, ​and assuming that the population is normally​ distributed, construct a 90% confidence interval estimate of the population​ mean u. Round two decimal places as needed.

In the year 2032, Katie Ruff is a leading traveling nurse. Katie is interested in reducing the mean recovery time for patients after experiencing a serious injury.  Suppose the mean recovery time is presently 8.4 months. Katie takes a random sample of 45 patients that have experienced serious injury to participate in a new treatment program and finds the sample mean is 7.9 months and a sample standard deviation of 1.2 months.  Using α = 0.05, answer the following questions. a) What is the setup for your null and alternative hypothesis?       b) What is the value of the test statistic?           c) Using the appropriate level of confidence, what is the confidence interval?             d) What is the interpretation (not your conclusions) in the context of the problem of the confidence interval you obtained in part c?         e) What is the p value?               f) What is the interpretation (not your conclusions) of the p value in the context of the problem you found in part…

If X=68​, σ=14​, and n=66​, construct a 95​% confidence interval estimate of the population​ mean, μ

Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds.  Find the t and calculate a 95% (α = .05) confidence interval.

A sample of 8 adult elephants had an average weight of 12,300 pounds. the standard deviation for the sample was 22 pounds. find the 95% confidence interval of the population mean for the weights of adult elephants. (the t distribution, table F, must be used for the confidence interval.)

A simple random sample of size n=40 is drawn from a population. The sample mean is found to be x=120.5 and the sample standard deviation is found to be s=13.4. Construct a​ 99% confidence interval for the population mean.   What is the lower and upper bound?

Construct the confidence interval for the population mean μ. c=0.90​, x=16.7​, σ=7.0​, and n=45

If X=115​, σ=22​, and n=36​, construct a 95​% confidence interval estimate of the population​ mean, μ.   Click here to view page 1 of the cumulative standardised normal distribution table. LOADING... Click here to view page 2 of the cumulative standardised normal distribution table. LOADING...       The 95​% confidence interval is enter your response here≤μ≤enter your response here. ​(Round to two decimal places as​ needed.)