Marketing managers’ salaries. A sample of eight states was selected randomly from each of three regions in the United States (Northeast, Southeast, and West). Mean annual salaries for marketing managers were retrieved from the U.S. Bureau of Labor Statistics (data.bls.gov/oes). The boxplots display the data.

a) What are the null and alternative hypotheses (in words, not symbols)?

b) Are the conditions for ANOVA met? Why or why not?