Instruction 15-1 A Large Organization Randomly Selects 150 Employees and Finds That

Multiple Choice

Instruction 15-1
A large organization randomly selects 150 employees and finds that 66% who have never taken a professional-development course would like such a course. The firm did a similar study 10 years ago in which 60% of a random sample of 160 employees wanted a professional-development 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 professional-development course in the recent study and the past study, respectively.
-Referring to Instruction 15-1,the organization tests to determine at the 0.05 level whether the population proportion has changed from the previous study.Which of the following is most correct?

A) Do not reject the null hypothesis and conclude that the proportion of employees who are interested in a professional-development course has increased over the intervening 10 years.
B) Reject the null hypothesis and conclude that the proportion of employees who are interested in a professional-development course has changed over the intervening 10 years.
C) Reject the null hypothesis and conclude that the proportion of employees who are interested in a professional-development 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 professional-development course has not changed over the intervening 10 years.