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Unformatted text preview: MATH 1572 Code 2293 Probability and Statistics: Quiz 5 Fall 2003 Name : Score : /10 Please use a pencil and show all work. The shelf life in days for bottles of a certain prescribed medicine is a random variable having the p.d.f f (x) = and f (x) = 0 elsewhere. 1. Find the probability that a bottle of this medicine will have a shelf life of anywhere from 80 to 120 days. 20, 000 , x>0 (x + 100)3 2. Find the avera...