Ap stat Term A1

1) Jack is the head groundskeeper of a golf club that has several different courses. One day he is instructed by the owner to cut 10 greens and that he should spend only one hour on each green. For a par 3 green there is a 0.8 probability that he will have it cut in one hour. If Jack's job consists of preparing six par 3 greens and four par 5 greens. what is the probability that he will have at least 9 of them cut in the allotted time?

a)0.0311

b)0.0396

c)0.0651

d)0.0991

e)0.1331

2) Scores on two exams are approximately normally distributed. Two hundred forty students took the Chemistry exam which had a mean of 76 and a standard deviation 14. Two hundred ten students took the Physics exam which had a mean of 72 and a standard deviation of 16. Approximately how many students, had scored of 89 or above?

a) 65

b) 72

c) 77

d) 84

e) 91

3) A Los Vegas slot machine requires 25 cents to play. It gives payouts, per play, based on the following probabilities:

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