Posted by
**Din123** on
.

A simple random sample of 50 students is taken from a class of 300 students. In the class,

* the average midterm score is 67 and the SD is 12

* there are 72 women

Let W be the number of women in the sample, and let S be the average midterm score of the sampled students.

1 - Find E(W)

2 - Find SE(W)

3 - Find E(S)

4 - Find SE(S)