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, and suppose that X has pmf: 2 3 4 P(x) .2 .3 .3 .2 Given E(X) = 2.5, compute o x. Express your answer using 3 decimal places (i.e., x.XXX).

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Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.