A Study Was Conducted to Test the Effectiveness of Supermarket

question 38

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:

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

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

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Definitions:

Populist Party

A political party in the United States, also known as the People's Party, which formed in the late 19th century representing mainly farmers' interests, advocating for bimetallism and government control of utilities.

Coinage of Silver

The act or policy of minting currency using silver, historically a topic of significant political debate in the United States, particularly in the 19th century regarding the backing of currency.

1880s and 1890s

The decades at the end of the 19th century, characterized by significant societal, technological, and political changes worldwide.

Vigilante Justice

This practice involves individuals taking the law into their own hands to deliver punishment without legal authority, often as a response to perceived injustices.