79. Let X, the number of flaws on the surface of a randomly selected boiler of a certain type, have a Poisson distribution with parameter 
5. Use Appendix Table A.2 to compute the following probabilities:

a. P(X  8)

b. P(X
8)

c. P(9  X)

d. P(5  X  8)

e. P(5  X  8)