Discuss the below:
Q. Tiedke's Department Store accepts three types of credit cards, MasterCard, Visa, and their own store card. The sales manager is interested in finding out whether there is a difference in the mean amounts charged by customers on the three cards. A random sample of 18 credit card purchases revealed these credit card amounts. At the 0.05 significance level, can we conclude there is a difference in the mean amounts charged per purchase on the three cards?
MasterCard Visa Store
$61 $85 $61
28 56 25
42 44 42
33 72 31
51 98 29
56 56
72