The percentage of American men who say they would marry the same woman if they had to do it all over again is 80%. The percentage os American women who say they would marry the same man again is 50%.

a) What is the probability that in a group of 10 married men, at least 7 will claim that they would marry the same woman again? What is the probability that less than half will say this?

P(x > or equal to 7) = (10 nCr 7)(.8)^7(.2)^3 = .201

P(x < 5) = (10 nCr 7) (.8)^5 (.2)^5 = .0125

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