Question

Suppose that a random sample of size 64 is to be selected from a population with mean 40 and standard deviation 5.

(a) What are the mean and standard deviation of the x sampling distribution?

μx	=
σx	=

(b) What is the approximate probability that x will be within 0.4 of the population mean μ? (Round your answer to four decimal places.)
P =  

(c) What is the approximate probability that x will differ from μ by more than 0.7? (Round your answer to four decimal places.)
P =

Answer 1