A sample mean is compared against a standard for a large sample.Now,assume the sample mean was found to equal 40.What is the appropriate confidence interval? (Note: Round to the nearest whole number. )
A)23

Question

A sample mean is compared against a standard for a large sample.Now,assume the sample mean was found to equal 40.What is the appropriate confidence interval? (Note: Round to the nearest whole number. )
A)23 < m < 57
B)Can't be determined from the information given.
C)14 < m < 66
D)38 < m < 42
E)20 < m < 60

Quizplus · Accepted Answer

The sample mean is 40, and the confidence interval is 23 < m < 57. This means that we are 95% confident that the true population mean is between 23 and 57.

A Sample Mean Is Compared Against a Standard for a Large