In Exercise 5.42, the number of defects per yard in a certain fabric, Y , was known to
Chapter 5, Problem 5.136(choose chapter or problem)
In Exercise 5.42, the number of defects per yard in a certain fabric, Y , was known to have a Poisson distribution with parameter . The parameter was assumed to be a random variable with a density function given by f () = e, 0, 0, elsewhere. a Find the expected number of defects per yard by first finding the conditional expectation of Y for given . b Find the variance of Y . c Is it likely that Y exceeds 9?
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