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If E[X] = 1 and Var(X) = 5, find(a) E[(2 + X)2]:(b) Var(4
Chapter 4, Problem 38P(choose chapter or problem)
QUESTION:
Problem 38P
If E[X] = 1 and Var(X) = 5, find
(a) E[(2 + X)2]:
(b) Var(4 + 3X).
Questions & Answers
QUESTION:
Problem 38P
If E[X] = 1 and Var(X) = 5, find
(a) E[(2 + X)2]:
(b) Var(4 + 3X).
ANSWER:
Solution:
Step1 of 2:
Given E(X) = 1, Var(X) = 5.
a). We have to find .
5 = - 1
Therefore,
Now,
= 14
Therefore,