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:

Selective Listening

A hearing and interpretation behavior where an individual focuses on certain parts of a conversation or message while ignoring others.

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A prolific author and speaker known for his expertise in communication, sales strategies, and emotional intelligence.

Poor Listening Habits

Bad practices in listening that hinder effective communication, such as interrupting, not paying attention, or jumping to conclusions.

Active Listening

The practice of fully concentrating, understanding, responding, and remembering what is being said during communication.