Which Supermarket Has the Lowest Prices in Town? All Claim

question 17

Multiple Choice

Which supermarket has the lowest prices in town? All claim to be cheaper, but an independent agency recently was asked to investigate this question. The agency randomly selected 100 items common to each of two supermarkets (labeled A and B) and recorded the prices charged by each supermarket. The summary results are provided below:
$$\begin{array} { l l l } \bar { x } \mathrm {~A} = 2.09 & \bar { x } \mathrm {~B} = 1.99 & \bar { d } = .10 \\s _ { \mathrm { A } } = 0.22 & s _ { \mathrm { B } } = 0.19 & s _ { d } = .03\end{array}$$
Assuming the data represent a matched pairs design, calculate the confidence interval for comparing mean prices using a 95% confidence level.

• A). \(10 \pm .004935\)
• B). \(10 \pm .056975\)
• C).10 \(.1255\)
• D) .10 \(.00588\)

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Definitions:

Nonwhite Senators

Members of the United States Senate who are not of White European descent, highlighting diversity and representation in American politics.

Racial Dog Whistling

The use of coded or suggestive language in politics and discourse to appeal to racist or prejudicial sentiments without explicit acknowledgment.

Hardworking

Showing diligence and effort in carrying out tasks or duties, often leading to successful outcomes or high productivity.

Principle-implementation Gap

The discrepancy between the adoption of formal policies or principles and their actual, practical application or execution.