Thursday, February 9, 2012

Assume that there are 8 different issues of Time, 7 different issues of Sports Illustrated, and 4 different i?

Assume that there

are 8 different issues of Time, 7 different

issues of Sports Illustrated, and 4 different issues of Popular Science,

including the December 1st issue, on the rack. You choose 4 of them at random.





(1) What is the probability that exactly 2 are issues issue of Time?











(2) What is the probability that you choose the December 1st issue

of Popular Science?Assume that there are 8 different issues of Time, 7 different issues of Sports Illustrated, and 4 different i?
q1

8 "Time", 11 "others"

Pr = 8c2*11c2/19c4 = 0.3973 %26lt;-------



q2

1c1*18c3/19c4 = 0.2105 %26lt;-------

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