SCENARIO 10-2
a Researcher Randomly Sampled 30 Graduates of an MBA

question 266

Multiple Choice

SCENARIO 10-2
A researcher randomly sampled 30 graduates of an MBA program and recorded data concerning their starting salaries.Of primary interest to the researcher was the effect of gender on starting salaries.
The result of the pooled-variance t-test of the mean salaries of the females (Population 1) and males
(Population 2) in the sample is given below. $\begin{array}{|l|r|}\hline \text { Hypothesized Difference } & 0 \\\hline \text { Level of Significance } & 0.05 \\\hline\text { Population 1 Sample }\\\hline \text { Sample Size } & 18 \\\hline \text { Sample Mean } & 99210 \\\hline \text { Sample Standard Deviation } & 13577 \\\text { Population 2 Sample } \\\hline \text { Sample Size } & 12 \\\hline \text { Sample Mean } & 105820 \\\hline \text { Sample Standard Deviation } & 11741 \\\hline\\\hline \text { Difference in Sample Means } & -6610 \\\hline t \text { Test Statistic } & -1.37631 \\\hline\\\hline {\text { Lower-Tail Test }} \\\hline \text { Lower Critical Value } & -1.70113 \\\hline \text { p-Value } & 0.089816 \\\hline\end{array}$
-Referring to Scenario 10-2, the researcher was attempting to show statistically that the female MBA graduates have a significantly lower mean starting salary than the male MBA graduates.The proper conclusion for this test is:

• A)At the \(\alpha\) = 0.10 level, there is sufficient evidence to indicate a difference in the mean starting salaries of male and female MBA graduates.
• B)At the \(\alpha\)= 0.10 level, there is sufficient evidence to indicate that females have a lower mean starting salary than male MBA graduates.
• C)At the \(\alpha\) = 0.10 level, there is sufficient evidence to indicate that females have a higher mean starting salary than male MBA graduates.
• D)At the \(\alpha\) = 0.10 level, there is insufficient evidence to indicate any difference in the mean starting salaries of male and female MBA graduates.

Comprehend the behavior of variable costs per unit with changes in production volume.

Identify and explain the concept of cost behavior.

Analyze the impact of activity level changes within the relevant range on cost behavior.

Grasp the concepts of cost prediction, estimation, and the role of cost functions.

---

Definitions:

Violent Model

An example or representation that exhibits aggression and is used as a behavior guide in observational learning.

Aggression

Actions aimed at causing injury or frightening other individuals.

Modelling

A process of learning that occurs through observing and imitating the behavior of others.

Frustration-Aggression Hypothesis

A psychological theory suggesting that the occurrence of aggressive behavior is caused by frustration.