Let X the number of flaws on the surface of a randomly selec

Let X, the number of flaws on the surface of a randomly selected boiler of a certain type, have a Poisson distribution with parameter n = 5. Use the cumulative Poisson probabilities from the Appendix Tables to compute the following probabilities. (Round your answers to three decimal places.) P{X 8)

Solution

X is Poisson with mean =5

	Prob
a	x<=8	0.9319
b	x=8	0.0653
c	x>=9	0.0681
d	5<=x<=8	0.4914
e	5<x<8	0.2506