Instruction 10-12
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 π₁ and π₂ 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 Instruction 10-12,if the firm wanted to test whether this proportion has changed from the previous study,which represents the relevant hypotheses?

Question

Quizplus · Accepted Answer

The correct hypotheses for testing whether the proportion has changed are: Null hypothesis (H0) stating there is no difference (π1 - π2 = 0) and the alternative hypothesis (H1) stating there is a difference (π1 - π2 ≠ 0). This setup allows for testing any change, either increase or decrease, in the proportions.

Instruction 10-12 A Corporation Randomly Selects 150 Salespeople and Finds That 66