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 $\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 10-10, what is/are the critical value(s) when testing whether population proportions are different if $\alpha$ = 0.10?
A)$\pm$ 1.645
B)$\pm$ 1.96
C)-1.96
D)$\pm$ 2.08

Question

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  $\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 10-10, what is/are the critical value(s) when testing whether population proportions are different if $\alpha$ = 0.10?
A)$\pm$ 1.645
B)$\pm$ 1.96
C)-1.96
D)$\pm$ 2.08

Quizplus · Accepted Answer

For a two-tailed test with an alpha level of 0.10, the critical value from the Z-distribution is ±1.645.

SCENARIO 10-10 a Corporation Randomly Selects 150 Salespeople and Finds π\piπ

SCENARIO 10-10
a Corporation Randomly Selects 150 Salespeople and Finds $\pi$