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4. Suppose that X is a random variable taking just two possible values {a, b}, where P(X = a) = 1-p and P(X= b) = p. (a) Compute E(X). (b) Compute Var(X).

4. Suppose that X is a random variable taking just two possible values {a, b}, where P(X = a) = 1-p and P(X= b) = p. (a) Compute E(X). (b) Compute Var(X).

A First Course in Probability (10th Edition)
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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### Problem 4 Suppose that \( X \) is a random variable taking just two possible values \(\{a, b\}\), where \( P(X = a) = 1 - p \) and \( P(X = b) = p \). #### (a) Compute \( E(X) \). #### (b) Compute \( \text{Var}(X) \).
Transcribed Image Text:### Problem 4 Suppose that \( X \) is a random variable taking just two possible values \(\{a, b\}\), where \( P(X = a) = 1 - p \) and \( P(X = b) = p \). #### (a) Compute \( E(X) \). #### (b) Compute \( \text{Var}(X) \).
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