A Researcher Wants to Determine Whether the Means of Two $\quad$

question 87

Multiple Choice

A researcher wants to determine whether the means of two independent populations are the same.She has two independent random samples, one from each population, shown in the following table: $\quad$ $\quad$ $\quad$ $\quad$ Sample I $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ $\quad$ Sample II
$\begin{array}{llll|lllll}\hline 11.5 & 15.7 & 22.8 & 22.5 & 12.6 & 13.8 & 17.5 & 10.7 & 13.5 \\12.4 & 25.3 & 16.1 & 25.1 & 14.8 & 11.8 & 14.7 & 10.8 & 12.7\end{array}$

She uses the Mann-Whitney U test and a significance level of 0.05.The test statistic is ______.

• A)16
• B)17
• C)18
• D)63
• E)64

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Definitions:

Security Prices

The market price at which a security is traded, reflecting the supply and demand dynamics for that particular security.

Supply And Demand

A fundamental economic concept that describes the relationship between the availability of goods and services and the desire for them by consumers, impacting their prices.

Cumulative Abnormal Returns

The sum of abnormal returns over a specified time period, often used to assess the impact of events in event studies.

Event Studies

Analysis methodology used to assess the impact of a specific event on the value of a company or an asset.