Let (S, P) be the sample space with S = {a, b, c} and P (s) = 1/3 for all s ∈ S.  Find the expected value of each of the following random variables: a.   X, where X(a) = 1, X(b) = 2, and X(c) = 10   b.   Y, where Y(a) = Y(b) = -1, and Y(c) = 2

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter12: Probability
Section12.4: Discrete Random Variables; Applications To Decision Making
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 Let (S, P) be the sample space with S = {a, b, c} and P (s) = 1/3 for all s ∈ S.  Find the expected value of each of the following random variables:

a.   X, where X(a) = 1, X(b) = 2, and X(c) = 10

 

b.   Y, where Y(a) = Y(b) = -1, and Y(c) = 2

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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,