SCENARIO 10-10 a Corporation Randomly Selects 150 Salespeople and Finds

question 96

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 and 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, what is/are the critical value(s) when testing whether the current population proportion is higher than before if = 0.05?

• A) 1.645
• B)+ 1.645
• C) 1.96
• D)+ 1.96

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Definitions:

Population Mean

The average of all the data points in a population.

Simple Random Samples

A sampling method in which every individual or item from a population has an equal chance of being selected.

Population Size

The total number of individuals or elements that make up the population being studied or analyzed.

First Selection

The initial choice or decision made from a set of options or alternatives.