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Unformatted text preview: Variables and
Functions Example 35 Notes Let X be a random variable with pmf deﬁned as follows:
pX (x ) = 1 k (5 − x )
0 if x = 0, 1, 2, 3, 4
otherwise (1) Find the value of k that makes pX (x ) a legitimate
pmf. 2 Probability Mass
Function What is the probability that X is between 1 and 3
inclusive? 3 From Variables to
Random Variables If X is not 0, what is the probability that X is less than
3? 9.11 Random
Functions Example 35
Solution. 1 2 3 By property 3 of pmf,...
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This note was uploaded on 01/24/2014 for the course STAT 225 taught by Professor Martin during the Spring '08 term at Purdue University-West Lafayette.
- Spring '08