Fundamentals of Statistics Plus MyLab Statistics with Pearson eText - Title-Specific Access Card Package (5th Edition)
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Chapter 6.1, Problem 21AYU

In Problems 21 and 22, (a) construct a discrete probability distribution for the random variable X [Hint: P ( x i ) = f i N ],(b) draw a graph of the probability distribution, (c) compute and interpret the mean of the random variable X, and (d) compute the standard deviation of the random variable X.

21. The World Series The following data represent the number of games played in each World Series from 1923 to 2014.

x (games played) Frequency
4 18
5 18
6 20
7 35
Source: Major League Baseball
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