1. A blocked analysis of variance is conducted to see if different point of purchase displays produce different results.Four displays are being tested.Drugstores and supermarkets are serving as the blocked variables. After one month the sales results appear below.

Treatments/Displays

W X Y Z

Drugstores 42 45 35 50

Blocks

Supermarkets 50 55 45 58

• Set up all relevant hypotheses.
• Explain the logic for blocking in this experiment.
• Ensure that you display the ANOVA table.
• Discuss the results and state conclusions.
• Offer anything else that might be useful in this analysis.