TABLE 10-2 A Researcher Randomly Sampled 30 Graduates of an MBA Program

question 161

Multiple Choice

TABLE 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.

-Referring to Table 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. What assumptions were necessary to conduct this hypothesis test?

• A) Both populations of salaries (male and female) must have approximate normal distributions.
• B) The population variances are approximately equal.
• C) The samples were randomly and independently selected.
• D) All of the above assumptions were necessary.

---

Definitions:

Harold Lasswell

Harold Lasswell was an influential American political scientist and communications theorist best known for his studies on the role of propaganda in society, emphasizing the importance of analyzing "who says what, to whom, why, how, and with what effect."

Politics

The set of activities associated with the governance of a country or area, especially the debate among individuals or parties hoping to achieve power.

Influences

The power or capacity to have an effect on the character, development, or behavior of someone or something.

Political Efficacy

The belief or confidence of individuals in their ability to influence the government or political processes.