Question

The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If​ convenient, use technology to find the probability. For a sample of n=40​, find the probability of a sample mean being less than 12,748 or greater than 12,751 when m=12748 and standard devation=1.3.

For the given​ sample, the probability of a sample mean being less than 12,748 or greater than 12,751 is ___________

Would the given sample mean be considered​ unusual?

Answer 1

Would the given sample mean be considered​ unusual?

Ans : NO, because probability is greater than 0.05.