1.8.6. Let the pmf p(r) be positive at r = -1,0, 1 and zero elsewhere. %3D (a) If p(0) = 1, find E(X²). (b) If p(0) = and if E(X) = }, determine p(-1) and p(1).

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
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1.8.6. Let the pmf p(a) be positive at a= -1,0, 1 and zero elsewhere.
(a) If p(0) = , find E(X?).
(b) If p(0) = and if E(X) = , determine p(-1) and p(1).
Transcribed Image Text:1.8.6. Let the pmf p(a) be positive at a= -1,0, 1 and zero elsewhere. (a) If p(0) = , find E(X?). (b) If p(0) = and if E(X) = , determine p(-1) and p(1).
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