In Problems 21 and 22, (a) construct a discrete probability distribution for the random variable X [FHint: P(x) = J. (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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