Suppose that X is a continuous random variable whose pdf satis fx(a) = 0 for all a <0 and all a > 2. Prove that var(X) < 1.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 31E
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Suppose that X is a continuous random variable whose pdf satisfies:
fx(a) = 0 for all a <0 and all a > 2. Prove that var(X) < 1.
Transcribed Image Text:Suppose that X is a continuous random variable whose pdf satisfies: fx(a) = 0 for all a <0 and all a > 2. Prove that var(X) < 1.
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