Suppose that X, Y C U. If Pr(X) = 0.3, Pr(Y) = 0.32, and Pr(X n Y) = 0.08, what is Pr(X' U Y)?
Suppose that X, Y C U. If Pr(X) = 0.3, Pr(Y) = 0.32, and Pr(X n Y) = 0.08, what is Pr(X' U Y)?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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Step 1
Given :
X , Y U . P (X) = 0.3 , P (Y) = 0.32 and P(X∩Y) = 0.08 .
To find : P (X' ∪ Y) = ?
The general probability addition rule for the union of two events states that ,
P(X∪Y)=P(X)+P(Y)−P(X∩Y)
where X∩Y is the intersection of the two sets.
Therefore , P (X∪Y) = 0.3 + 0.32 - 0.08
P (X∪Y) = 0.54
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