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Select one of the 1000 students at random and let the

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Reference no: EM13582219

Suppose 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 one of the 1000 students at random and let the random variable X equal the size of that student's class. Define the pmf of X.

(c) What is the mean of X.

Reference no: EM13582219

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