In a study to determine if a college student's year in college is independent of his or her major, a sample of 200 students was found to contain 40 juniors and 50 accounting majors. Then, the expected frequency of junior accounting majors is
A) 10 .
B) 20 .
C) 25 .
D) 15 .

Question

Quizplus · Accepted Answer

The expected frequency is calculated by multiplying the proportion of juniors (40/200) by the proportion of accounting majors (50/200) and then multiplying by the total sample size (200). This gives (40/200) * (50/200) * 200 = 10.

In a Study to Determine If a College Student's Year