The following data show customer satisfaction scores, on a scale of 1–20, for a chain of hair salons at three different locations during specific days of the week. The manager would like to investigate if a difference exists in satisfaction scores between these locations. These data can also be found in the Excel file hair salon.xlsx.

Locations Day Midway Towson Dover Monday 13 14 12 Wednesday 14 15 10 Friday 16 15 14 Saturday 16 18 17 Sunday 17 20 14

a. Perform a randomized block ANOVA using a = 0.05 to test if a difference exists in satisfaction scores between these three locations.

b. Perform a hypothesis test using a = 0.05 to determine if the blocking factor was effective.

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

d. Verify your results with Excel.

AppendixLO1