The shelf life, in days, for bottles of a certain prescribed medicine is a random variable having the density functi shown below. Find the probability that a bottle of this medicine will have a shelf life of (a) at least 600 days; (b) anywhere from 140 to 170 days. f(x) = 45,000 (x+150)³ 0, • x>0 elsewhere (a) The probability of a shelf life of at least 600 days is.

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