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.

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

b. Perform a hypothesis test using α = 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 α = 0.05.

d. Verify your results with Excel.

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