The life span in hours of an electrical component is a
Chapter , Problem 2.109(choose chapter or problem)
The life span in hours of an electrical component is a random variable with cumulative distribution function F(x) = 1 e x 50 , x> 0, 0, eleswhere. (a) Determine its probability density function. (b) Determine the probability that the life span of such a component will exceed 70 hours.
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