(a) Find E(X), Var(X), SD(X).
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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Q20: Roll one fair 6-sided dice, let X be the number observed.
(a) Find E(X), Var(X), SD(X).
(b) Let Y be the sum of 10 independent rolls of fair dice. Find E(Y), Var(Y), SD(Y).
(c) Calculate the following quantities: E(X2), E(3X+2), E((Y+2)2), Var(-X), SD(2Y).
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