Managers’ hourly wages. What affects marketing managers’

hourly wages? In order to find out, mean hourly wages were retrieved from the U.S. Bureau of Labor Statistics for two managerial occupations in marketing

(Sales managers, Advertising managers) for a random sample of states from three regions (Midwest, Southeast, West) (www

.bls.gov/data/#wages). Here are boxplots showing mean hourly wages for the two marketing occupations and the three regions as well as the results for a two-way ANOVA.

a) Is this an experiment or an observational study? Explain.

b) Are the conditions for two-way ANOVA met?

c) If so, perform the hypothesis tests and state your conclusions in terms of hourly wages, occupational type, and region.

d) Is it appropriate to interpret the main effects in this case? Explain.

Transcribed Image Text:

60 80 T 50 50 Hourly Wage 30 40 40 30 20 20 60 80 T ADV I 50 60 I Hourly Wage 30 40 40 30 20 20 Manager Type Sales MW SE W Region