Customers can replace 1, 2, 3, or 4 tires at a time for their vehicle at Tire Masters, a nationwide tire shop chain. For customers who have had their tires replaced at tire

Masters, the mean number of tires replaced is M = 3, 14, with a standard deviation of0= 1.24. Suppose that we will take a random Sample of n=7 tire replacement orders. (Each order gives the number of tires replaced.) Let represent the sample mean of the 7 tire replacement orders.

Consider the sampling distribution of the sample mean X.

Write your answers with two decimal

places, rounding if needed.

A) Find M (the mean of the sampling distribution

of the sample mean.

ux=

B.) Find (the standard deviation of the sampling

distribution of the sample mean

6x=