A marketing survey is conducted to determine sport shirt preference. A questionnaire is presented to a panel of four judges. Each judge rates three shirts of three brands (X, Y, and Z). The data entry...

A marketing survey is conducted to determine sport shirt preference. A questionnaire is presented to a panel of four judges. Each judge rates three shirts of three brands (X, Y, and Z). The data entry form is shown here:

An index is computed as follows:

The collected data follow:

11836

21747

31767

41846

12635

22534

32546

42436

13988

23877

33978

43887

Using analysis of variance, compare the color rating, workmanship, overall preference, and index among the three brands. (HINT: This is a repeated measures design-each judge rates all three brands.)