?A simple random sample of size n is drawn from a population. The sample mean, x, is 54.8 and the sample standard deviation is 10.5. (a) Const
Chapter 9, Problem 9(choose chapter or problem)
A simple random sample of size n is drawn from a population. The sample mean, x, is 54.8 and the sample standard deviation is 10.5.
(a) Construct the 90% confidence interval for the population mean if the sample size, n, is 30.
(b) Construct the 90% confidence interval for the population mean if the sample size, n, is 51. How does increasing the sample size affect the width of the interval?
(c) Construct the 99% confidence interval for the population mean if the sample size, n, is 30. Compare the results to those obtained in part (a). How does increasing the level of confidence affect the confidence interval?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer