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# An urn contains 7 red and 11 white balls. Draw one ball at random from the urn. Let X =

ISBN: 9780321923271 41

## Solution for problem 2.4-1 Chapter 2.4

Probability and Statistical Inference | 9th Edition

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Problem 2.4-1

An urn contains 7 red and 11 white balls. Draw one ball at random from the urn. Let X = 1 if a red ball is drawn, and let X = 0 if a white ball is drawn. Give the pmf, mean, and variance of X.

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STAT 110 – Notes for Week of 9/27/16  Chapter 13 Continued o Normal curve: a symmetric bell-shaped curve.  A normal curve is described by its mean and standard deviation.  The mean of a normal curve identifies the center of a distribution. The mean determines the location of the curve on a graph.  The standard deviation...

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