Question: The city of Tucson, Arizona, employs people to assess the value of homes for the purpose of establishing real estate tax. The city manager routinely sends each assessor to five homes and then compares the results. The information is given below, in thousands of dollars.

Assessor

Home Zawodny Norman Cingle Holiday

A $53.0 $55.0 $49.0 $45.0

B 50.0 51.0 52.0 53.0

C 48.0 52.0 47.0 53.0

D 70.0 68.0 65.0 64.0

E 84.0 89.0 92.0 86.0

a. Conduct a one-way ANOVA of these data. State the hypotheses to test for equal population means.

b. At the 0.05 level of significance, do the sample data indicate that at least one of the five population mean total returns is different from the others?

c. If so, which is "best"? (Be certain to define "best".)