Suppose that the average weekly earnings for employees in general automotive repair shops is $450, and that the standard deviation for the weekly earnings for such employees is $50. a sample of 100 such employees is selected at random. find the standard deviation of the sampling distribution of the means of average weekly earnings for samples of size 100

 5

Step-by-step explanation:

We know that the standard deviation of the sampling distribution of the means is given by :_

Given : The average weekly earnings for employees in general automotive repair shops is.

The standard deviation for the weekly earnings for such employees =

Now, the standard deviation of the sampling distribution of the means of average weekly earnings for samples of size:-

Hence, the standard deviation of the sampling distribution of the means of average weekly earnings for samples of size 100 = 5

12 servings. 4 times 3= 12

5050

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