The 95% confidence interval for μ is

Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a recent season, the population standard deviation of the yards per carry for all running backs was 1.36. The yards per carry of 25 randomly selected running backs are shown below. Assume the yards per carry are normally distributed. 2.6 3.5 3.1 4.6 3.4 4.9 7.4 6.7 4.3 5.2 3.9 4.6 2.9 5.6 6.6 7.3 6.5 7.2 96 1.9 5.6 2.7 22 2.8 5.2 4.1 3.6 Interpret the results. Choose the correct answer below. OA. If a large sample of players are taken approximately 95% of them will have yards per carry between the bounds of the confidence interval. OB. With 95% confidence, it can be said that the population mean yards per carry is between the bounds of the confidence interval. OC. It can be said that 95% of players have a yards per carry between the bounds of the confidence interval.…

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.)

Construct the indicated confidence interval for the population mean μ using the​ t- distribution. Assume the population is normally distributed. c=0.95​, x=12.9​, s=0.81, n=19   (______,_______)

answer e,f,g The following random sample was selected from a normal distribution: 4, 6, 3, 5, 9, 3. d. Assume that the sample mean x and sample standard deviation s remain exactly the same as those you just calculated but are based on a sample of n = 25 observations rather than n = 6 observations. Repeat parts a–c. What is the effect of increasing the sample size on the width of the confidence intervals? e. Use Rejection region to test the null hypothesis that the mean of the population is 6 against the alternative hypothesis, ?<6. Use ? = .05. f. Use p-Value to test the null hypothesis that the mean of the population is 6 against the alternative hypothesis, ? ≠6. Use ? = .05.

K In a random sample of eleven people, the mean driving distance to work was 22.3 miles and the standard deviation was 4.9 miles. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence interval for the population mean u. Interpret the results. Identify the margin of error. (Round to one decimal place as needed.) Construct a 95% confidence interval for the population mean. (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) OA. It can be said that % of the population has a driving distance to work (in miles) that is between the interval's endpoints. O B. % of all random samples of eleven people from the population will have a mean driving distance to work (in miles) that is between the interval's endpoints. OC. With % confidence, it can be said that most driving distances…

Find the indicated confidence interval. Assume the standard error comes from a bootstrap distribution that is approximately normally distributed. A 99 % confidence interval for a proportion p if the sample has n = 100 with p = 0.73, and the standard error is SE = 0.04. %3D Round your answers to three decimal places. The 99 % confidence interval is i to