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

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5

step-by-step explanation:

for volume, add base x height x width