7. A couple decides to have 4 kids. Assume that each child has an equal chance of being a boyor a girl and that each pregnancy is independent. Let X be the number of girls the couple has.a. What is the expected number of girls a couple will have in a family of 4 kids?

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Answered: A couple decides to have 4 kids. Assume…

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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A couple decides to have 4 kids. Assume that each child has an equal chance of being a boy or a girl and that each pregnancy is independent. Let X be the number of girls the couple has. a. What is the expected number of girls a couple will have in a family of 4 kids?