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Discrete Random Variables: Practice 5: Hypergeometric Distribution

Module by: Barbara Illowsky, Ph.D., Susan Dean. E-mail the authors

Summary: This module provides further practice and exercises on Hypergeometric Distribution in statistics

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Student Learning Objectives

  • The student will investigate the properties of a hypergeometric distribution.


Suppose that a group of statistics students is divided into two groups: business majors and non-business majors. There are 16 business majors in the group and 7 non-business majors in the group. A random sample of 9 students is taken. We are interested in the number of business majors in the group.

Interpret the Data

Exercise 1

In words, define the Random Variable XX.

Exercise 2

Exercise 3

XX takes on the values:



Exercise 4

Construct the probability distribution function (PDFPDF) for XX.

Table 1
XX P(X=x)P(X=x)

Exercise 5

On average(μμ), how many would you expect to be business majors?



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