CR7.15 A chemical supply company currently has in stock 100 pounds of a certain chemical, which it

Question:

CR7.15 A chemical supply company currently has in stock 100 pounds of a certain chemical, which it sells to customers in 5-pound lots. Let x 5 the number of lots ordered by a randomly chosen customer. The probability distribution of x is as follows:

x 1 2 3 4 p(x) .2 .4 .3 .1

a. Calculate the mean value of x.

b. Calculate the variance and standard deviation of x.

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Ali Khawaja

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