Suppose that Y1 is a binomial random variable with four trials and success probability 0.7 and that Y2 is an independent binomial random variable with three trials and success probability 0.5. Let W = Y1 + Y2. W does not have a binomial distribution. Find the probability mass function for W. [HINT: P(W = 0) = P(Y1 = 0, Y2 = 0); P(W = 1) = P(Y1 = 1, Y2 = 0) + P(Y1 = 0, Y2 = 1); etc.] (Round your answers to four decimal places.)
Suppose that Y1 is a binomial random variable with four trials and success probability 0.7 and that Y2 is an independent binomial random variable with three trials and success probability 0.5. Let W = Y1 + Y2. W does not have a binomial distribution. Find the probability mass function for W. [HINT: P(W = 0) = P(Y1 = 0, Y2 = 0); P(W = 1) = P(Y1 = 1, Y2 = 0) + P(Y1 = 0, Y2 = 1); etc.] (Round your answers to four decimal places.)
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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Question
Suppose that
Y1
is a binomial random variable with four trials and success
Y2
is an independent binomial random variable with three trials and success probability 0.5. Let
W = Y1 + Y2.
W does not have a binomial distribution. Find the probability mass
P(W = 0) = P(Y1 = 0, Y2 = 0);
P(W = 1) = P(Y1 = 1, Y2 = 0) + P(Y1 = 0, Y2 = 1);
etc.] (Round your answers to four decimal places.)
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