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.

Comprehend the energetic trade-offs in reproductive strategies among animals.

Differentiate between the structures and life cycles of various marine invertebrates.

Grasp the mechanisms of movement in ctenophores.

Recognize the simplicity of placozoans and their adaptive features.

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Definitions:

Risk Factor

An attribute, characteristic or exposure that increases the likelihood of developing a disease or injury.

Preventive Safety

Measures and practices implemented to reduce the risk of accidents, injuries, or other adverse events before they occur.

Eliminating Distractions

A process of removing factors that divert attention from tasks or objectives.

Communicable Disease

An infectious disease that can be transmitted from person to person or through vectors.