Television advertisers base their investment decisions regarding the promotion of their products and services on demographic information about television viewers.

The age of the viewers is a key factor in this process.

The following table shows the number of hours that a random sample of individuals watched television during the week. The individuals are grouped according to their ages. These data can also be found in the Excel file advertisers.

xlsx.

18–24 25–34 35–49 50–64 39 41 44 49 14 40 19 33 15 33 27 33 17 35 36 39 20 21 49 71

a. Perform a one-way ANOVA using a = 0.05 to determine if there is a difference in the average number of hours per week of television viewing by the four age groups.

b. If warranted, perform a multiple comparison test to determine which pairs are different using a = 0.05.

c. Verify your results with Excel or PHStat.

AppendixLO1