Question

Mike wants to find the confidence interval for a set of data. He knows the sample size and the sample proportion. Which other piece of information does he need to determine the confidence interval?

A.
the critical value
B.
the number of favorable responses
C.
the standard error of the mean
D.
the standard deviation

Answer 1

C. the standard error of the mean

Explanation:

You need the sample mean, sample proportion , and the standard error which depend on z or t, sigma or s, and n