SCENARIO 10-10
a Corporation Randomly Selects 150 Salespeople and Finds $\pi$

question 185

Multiple Choice

SCENARIO 10-10
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 $\pi$ ₁ and $\pi$ ₂ 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 Scenario 10-10,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 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)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.
• C)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 increased over the intervening 10 years.

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Definitions:

Information Technologies

Systems and tools designed for acquiring, processing, storing, and disseminating various kinds of data and information, playing a critical role in modern organizational and societal operations.

Network Organization

An organizational structure emphasizing less hierarchical, more flexible, and interconnected arrangements, often through the use of technology.

Innovation

The process of creating new ideas, products, or methods that bring improvement or address specific challenges.

Lateral Communication

The exchange of information between individuals at the same hierarchical level within an organization.