A Study Was Conducted to Test the Effectiveness of Supermarket

question 40

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:
$\begin{array}{l|c|c|c|c|c}\text { Source } & \text { DF } & \text { SS } & \text { MS } & \text { F } & \text { P } \\\hline \text { Display } & 2 & 1691393 & 845696 & 1709.37 & 0.0000 \\\text { Price } & 2 & 3089054 & 154427 & 3121.89 & 0.0000 \\\text { Display }{ }^{*} \text { Price } & 4 & 510705 & 127676 & 258.07 & 0.0000 \\\text { Error } & 18 & 8905 & 495 & & \\\text { Total } & 26 & 5300057 & & &\end{array}$

Which of the following tests should be conducted first?

• A) A test of the Weekly Sales Main Effect.
• B) A test of the Display Main Effect.
• C) A test of the interaction between Price and Display.
• D) A test of the Price Main Effect.

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Definitions:

Character Data

Character data refers to any data that represents letters, symbols, or numerals that are not used in calculations, typically stored and manipulated as strings.

Relational Operators

Operators used in programming languages to compare two values or expressions, such as <, >, ==, !=, <=, and >=.

Right-To-Left Associativity

The parsing direction for operators of equal precedence, indicating that operations are evaluated from the right to the left.

Short-Circuit Evaluation

A programming technique where the second argument of a logical operator is evaluated only if the first argument does not suffice to determine the value of the expression.