A Study Was Conducted to Test the Effectiveness of Supermarket $\text { The ANOVA table is shown below: }$

question 28

Multiple Choice

A study was conducted to test the effectiveness of supermarket sales strategies. At one supermarket, the price level (regular, reduced price, and at cost to supermarket) and display level (normal display space, normal display space plus end-of-aisle display, and twice the normal display space) were tested to determine if they had any effect on the weekly sales of a particular supermarket product. Each of the combinations of price level and display level were put in place for a randomly selected week and the weekly sales of the product was recorded. Each combination was used three times over the course of the experiment. The results of the study are shown here:

$\text { The ANOVA table is shown below: }$

$\begin{array}{l|c|c|c|c|c}\text { Source } & \text { DF } & \text { SS } & \text { MS } & \text { F } & \text { P } \\\hline \text { Display } & 2 & 1691393 & 845696 & 1709.37 & 0.0000 \\\text { Price } & 2 & 3089054 & 154427 & 3121.89 & 0.0000 \\\text { Display }{ }^{*} \text { Price } & 4 & 510705 & 127676 & 258.07 & 0.0000 \\\text { Error } & 18 & 8905 & 495 & & \\\text { Total } & 26 & 5300057 & & &\end{array}$ Based on the results found in the ANOVA table, should the Main Effects tests for either Display or Price be conducted?

• A) Yes. The main effects tests are both significant and should be tested.
• B) It depends on whether the main effects tests will be significant or not.
• C) Yes. The interaction of Display and Price indicates that the Main Effects should be tested.
• D) No. The interaction of Display and Price indicates that the Main Effects should not be tested.

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Definitions:

Military Pay

The compensation, including salary, benefits, and allowances, provided to members of the armed forces, varying by rank, experience, and duty status.

Civilian Jobs

Employment positions not associated with the military or defense sectors, available to the general public.

Pay Surveys

Research conducted to collect and analyze data on wages and salaries within an industry, region, or occupation to determine competitive compensation levels.

Pay Differentials

Variations in pay for employees, often based on factors such as geographic location, job duties, industry standards, or skill levels.