A chemical supply company currently has
Chapter 0, Problem 7.38(choose chapter or problem)
A chemical supply company currently has in stock 100 lb of a certain chemical, which it sells to customers in 5-lb lots. Let x the number of lots ordered by a randomly chosen customer. The probability distribution of x is as follows: x 12 34 p(x) .2 .4 .3 .1a. Calculate the mean value of x.b. Calculate the variance and standard deviation of x.
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