The mean number of hours worked for the 30 males was 6, and for the 20 females was 9. The
Overall mean number of hours worked …
A) is 7.5
B) is 7.2
C) is none of these.
D) is 6.5
E) cannot be determined.

Question

Quizplus · Accepted Answer

The overall mean is calculated by taking the total hours worked by both groups and dividing by the total number of individuals: (30*6 + 20*9) / (30+20) = 7.2.

The Mean Number of Hours Worked for the 30 Males