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

question 29

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.Then $\mu$ _U is ______.

• A)4.5
• B)9
• C)31.5
• D)40
• E)63

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Definitions:

Staff Turnover

The rate at which employees leave a company and are replaced by new hires, affecting an organization's continuity and resource allocation.

Employee Satisfaction

A measure of how pleased employees are with their job and work environment, which can impact productivity, loyalty, and overall company success.

Collect And Analyze

The process of gathering data relevant to a specific topic or issue and examining it to draw conclusions or make informed decisions.

Focus Groups

A qualitative research method involving guided discussions among a small group of people to gather diverse perspectives on a particular subject or product.