A couple plans to have children until they get a girl, but they agree they will not have more than three children, even if all are boys. Assume that the probability of having a girl is 0.55. Let X be a random variable indicating how many children the couple will have. Find the standard deviation of the random variable X.

A couple plans to have children until they get a girl, but they agree they will not have more than three children, even if all are boys. Assume that the probability of having a girl is 0.55. Let X be a random variable indicating how many children the couple will have. Find the standard deviation of the random variable X.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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x	1	2	3
P(X=x)	0.550	0.248	0.202

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