The proportion of time per day that all checkout counters in a supermarket are busy is a
Chapter 4, Problem 4.28(choose chapter or problem)
The proportion of time per day that all checkout counters in a supermarket are busy is a random variable Y with density function f (y) = $ cy2(1 y)4, 0 y 1, 0, elsewhere. a Find the value of c that makes f (y) a probability density function. b Find E(Y ).
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