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Dont plagarise and read the question carefully please and do it correctly and solve it as soon as possibl

Dont plagarise and read the question carefully please and do it correctly and solve it as soon as possibl

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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Dont plagarise and read the question carefully please and do it correctly and solve it as soon as possible 

2) Suppose X is a random variable with E(X²) = 3 and Var(X)= 2. E(X) = ?
Transcribed Image Text:2) Suppose X is a random variable with E(X²) = 3 and Var(X)= 2. E(X) = ?
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