TABLE 12-5
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 u 1 and u 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 Table 12-5, what is the critical value when performing a chi-square test on whether population proportions are different if ? = 0.05?
A) ±1.645
B) ±1.96
C) 2.706
D) 3.841

Question

TABLE 12-5
 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 u 1   and u 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 Table 12-5, what is the critical value when performing a chi-square test on whether population proportions are different if ? = 0.05?
A) ±1.645
B) ±1.96
C) 2.706
D) 3.841

Quizplus · Accepted Answer

The critical value for a chi-square test with 1 degree of freedom at a significance level of 0.05 is 3.841.

TABLE 12-5 a Corporation Randomly Selects 150 Salespeople and Finds That