Chapter 8: Discrete Probability Distributions
351
Figure 8-28:
Display of the Hypergeometric Distribution
Workbook for
Example 8-21
Example 8-22
: What is the probability that a waiter will not serve
alcoholic beverages to only 3 students if he randomly checks the IDs of 8
students from among 12 students of which 5 are not of legal drinking age?
Solution:
Let
X
= number of students who will not be served alcoholic
beverages by the waiter. From the data given in the problem,
= 12,
= 8,
= 5,
= 3,
–
= 12 – 5 = 7, and
–
= 8 – 3 = 5. The display of the
different components for the data is given in
Figure 8-29
.
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