The Following Table Shows the Weekly Total Sales (In Dollars)

question 55

Multiple Choice

The following table shows the weekly total sales (in dollars) at a small roadside vegetable for the months June through September.
$\begin{array}{ccccc}\hline \text { Month } &{\text { Weekly Sales }} \\\hline \text { June } & 1132 & 791 & 1006 & 990 \\\text { July } & 1060 & 1069 & 1007 & 1093 \\\text { August } & 1181 & 1143 & 1248 & 1223 \\\text { September } & 841 & 855 & 957 & 943 \\\hline\end{array}$
Perform a Tukey test to determine which pairs of means, if any, differ. Use the $\alpha = 0.01$ le significance.

• A) \(\mu _ { \text {June } } \neq \mu _ { \text {Aug } } , \mu _ { \mathrm { Aug } } \neq \mu _ { \text {Sept } }\)
• B) \(\mu _ { \text {July } } \neq \mu _ { \mathrm { Aug } }\)
• C) \(\mu _ { \mathrm { Aug } } \neq \mu _ { \mathrm { Sept } }\)
• D) There is not enough evidence to conclude that any of the means differ.

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Definitions:

Stereotype Threat

Apprehension about confirming negative stereotypes related to a person’s own group.

Nonvaluative

Pertaining to an approach or judgment that does not involve ascribing value, worth, or merit.

Stereotype Threat

The risk of confirming negative stereotypes about one's social group, which can hinder performance in areas such as academic achievement, due to anxiety and increased pressure.

Short-Term Memory

The part of the memory system where information is stored for a short duration, often just several seconds to a minute, without rehearsal.