12 A senate committee contains 5 Democrats and 4 Republicans. An experiment consists of randomly selecting a subcommittee of 3. The random variable X is defined to have as value the number of Republicans on the subcommittee. What is Pr[X = 21? a) 1021 b) 5/14 e) 9/14 d) 11/21 e) none of the others

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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12 A senate committee contains 5 Democrats and 4 Republicans. An experiment consists of
randomly selecting a subcommittee of 3. The random variable X is defined to have as value
the number of Republicans on the subcommittee. What is Pr(X = 2]?
a) 1021
b) 5/14
c) 9/14
d) 11/21
e) none of the others
Transcribed Image Text:12 A senate committee contains 5 Democrats and 4 Republicans. An experiment consists of randomly selecting a subcommittee of 3. The random variable X is defined to have as value the number of Republicans on the subcommittee. What is Pr(X = 2]? a) 1021 b) 5/14 c) 9/14 d) 11/21 e) none of the others
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