What is the average class size

Reference no: EM13204916

Suppose that a school has 20 classes: 16 with 25 students in each, three with 100 students in each, and one with 300 students for a total of 1000 students

a) What is the average class size?

b) Select a student randomly out of the 1000 students. Let the random variable X equal the size of the class to which this student belongs and define the p.m.f. of X

c) Find the mean of X.

Reference no: EM13204916

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