Robinson, a large department store, wanted to example to look at - 6683

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Robinson, a large department store, wanted to example to look at which credit cards were being utilized for purchases. A sample of 18 credit card sales was taken and recorded. The amounts charged for each of three different credit cards, MasterCard, Visa, and Discover, were: six MasterCard sales, seven Visa sales, and five Discover sales. The store used an ANOVA to test if the mean sales for each credit card were equal. What are the degrees of freedom for the F statistic? 

A.   3 in the numerator, 18 in the denominator 

B.   6 in the numerator, 15 in the denominator

C.   2 in the numerator, 15 in the denominator

D.   18 in the numerator, 3 in the denominator 

 
Solution Description

Robinson, a large department store, wanted to example to look at which credit cards were being utilized for purchases. A sample of 18 credit card sales was taken and recorded. The amounts charged for each of three diffe