A four-sided die has two faces numbered 0 and two faces numbered 2. Another four-sided die has its faces numbered 0, 1, 4, and 5. The two dice are rolled. Let X and Y be the respective outcomes of the roll. Let W = X + Y . (a) Find E(W) (b) Find Var(W)

A four-sided die has two faces numbered 0 and two faces numbered 2. Another four-sided die has its faces numbered 0, 1, 4, and 5. The two dice are rolled. Let X and Y be the respective outcomes of the roll. Let W = X + Y . (a) Find E(W) (b) Find Var(W)

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 5E

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Question

A four-sided die has two faces numbered 0 and two faces numbered 2. Another four-sided
die has its faces numbered 0, 1, 4, and 5. The two dice are rolled. Let X and Y be the
respective outcomes of the roll. Let W = X + Y .
(a) Find E(W)
(b) Find Var(W)

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