Instruction 10-12 A Corporation Randomly Selects 150 Salespeople and Finds That 66

question 88

Multiple Choice

Instruction 10-12
A corporation randomly selects 150 salespeople and finds that 66% who have never taken a self-improvement course would like such a course. The firm did a similar study 10 years ago in which 60% of a random sample of 160 salespeople wanted a self-improvement course. The groups are assumed to be independent random samples. Let π₁ and π₂ represent the true proportion of workers who would like to attend a self-improvement course in the recent study and the past study, respectively.
-Referring to Instruction 10-12,the company tests to determine at the 0.05 level whether the population proportion has changed from the previous study.Which of the following is most correct?

• A) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has changed over the intervening 10 years.
• B) Reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has increased over the intervening 10 years.
• C) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has increased over the intervening 10 years.
• D) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a self-improvement course has not changed over the intervening 10 years.

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Definitions:

Conclusions

The end or finish of an event, process, or text, often involving a final judgment or decision based on reasoning or data analysis.

Racial Stereotypes

Oversimplified and generalized beliefs about a particular group of people based on their race.

Critical Thinking

The intellectually disciplined process of actively and skillfully conceptualizing, applying, analyzing, synthesizing, and evaluating information to reach an informed conclusion.

Gender Stereotypes

Preconceived and oversimplified beliefs about the characteristics, attributes, and behaviors of males or females, often resulting in discrimination or bias.