Question
A survey of 50 couples shows the following results: Number of kids 0 1 2 3 4 Number of couples 25 15 63 1
A survey of 50 couples shows the following results: Number of kids 0 1 2 3 4 Number of couples 25 15 63 1 1. Let the variable x be the number of kids. Let P(x) be the probability that a couple selected at random has x kids. Find the probability distribution of the discrete random variable x 2. Graph the probability distribution P(X). 3. Find the expected number of kids for a randomly chosen couple. 4. Find the standard deviation of the probability distribution P (X).
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Step: 1
1 To find the probability distribution we first find the probability of each random variable x by di...
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An Introduction To Statistical Methods And Data Analysis
Authors: R. Lyman Ott, Micheal T. Longnecker
7th Edition
1305269470, 978-1305465527, 1305465520, 978-1305269477
