SCENARIO 12-1
a Corporation Randomly Selects 150 Salespeople and Finds $\pi$

Multiple Choice

SCENARIO 12-1
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 12-1,what is the value of the test statistic to use in evaluating the alternative hypothesis that there is a difference in the two population proportions using ? = 0.10?

A) 4.335
B) 2.706
C) 1.194
D) 0.274