A Local Consumer Reporter Wants to Compare the Average Costs

question 62

Multiple Choice

A local consumer reporter wants to compare the average costs of grocery items purchased at three different supermarkets, A, B, and C. Prices (in dollars) were recorded for a sample of 60 randomly selected grocery items at each of the three supermarkets. In order to reduce item-to-item variation, the prices were recorded for each item on the same day at each supermarket. The results of a Bonferroni analysis are summarized below. ___________ $\begin{array}{lccc}\text { Supermarket } & \text { A } &\overline{ \text { B} \quad \text { C }} \\\text { Mean Price } & 1.665 & 1.919 \quad 1.925 \end{array}$
Interpret the Bonferroni analysis results.

• A) A has a significantly smaller mean price than either of the other two supermarkets.
• B) A has a significantly larger mean price than either of the other two supermarkets.
• C) C has a significantly larger mean price than either of the other two supermarkets.
• D) B and C have significantly different mean prices.

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Definitions:

Example

An illustration or instance used to explain or support a statement or principle.

Infant's Liability

The legal responsibilities and limitations on contracts or agreements entered into by minors, often subject to special rules and protections.

Torts and Contracts

Legal concepts where torts refer to civil wrongs causing harm or injury for which the law provides remedies, and contracts refer to agreements between parties creating mutual obligations enforceable by law.

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