Question

Statistics show on average an adult person receives 425 pieces of mail each year with a standard deviation of 50. What are the mean and the standard error of the mean of this sampling distribution if all possible samples of size 100 are selected?

Answer 1

The answer is 60.11

Explanation:

An adult person receives 425 pieces of mail each year with a standard deviation of 50.

Now, we have the following details :

Mean of sample = 425

sigma = 50

Standard error =
`(425)/(√(50) )`

=
`(425)/(7.07)` = 60.11