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Probability Mass
Functions Notes From Variables to
Random Variables
Probability Mass
Function 9.5 Example 33 continued
We deﬁne the event A as the event that a student has 2
or more siblings. What is P(X ∈ A)? Random
Variables and
Probability Mass
Functions Solution.
P(X ∈ A) = P(X ≥ 2) = .275 + .075 + .025 = .375 From Variables to
Random Variables
Probability Mass
Function 9.6 Notes Discrete Random Variables
There are two main types of quantitative random
variables: discrete and continuous. A discrete ran...
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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.
 Spring '08
 MARTIN
 Probability

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