TABLE 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 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 Table 12-1,if the firm wanted to test whether this proportion has changed from the previous study,which represents the relevant hypotheses?

Question

TABLE 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

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 Table 12-1,if the firm wanted to test whether this proportion has changed from the previous study,which represents the relevant hypotheses?

Quizplus · Accepted Answer

The null hypothesis (H0) should state that there is no change in the proportion, which is represented by π1 - π2 = 0. The alternative hypothesis (H1) should state that there is a change, represented by π1 - π2 ≠ 0.

TABLE 12-1 A Corporation Randomly Selects 150 Salespeople and Finds That 66