SOLUTION: Suppose 40% of the TV sets in use in Canada on a particular night were turned into game 7 of the Stanley Cup Playoffs. a) If we were to take a sample of six in-use TV sets that n

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Question 1168118: Suppose 40% of the TV sets in use in Canada on a particular night were turned into game 7 of the Stanley Cup Playoffs.
a) If we were to take a sample of six in-use TV sets that night, what is the probability exactly three are turned to the Stanley Cup playoffs?
b)If, instead, the sample consisted of 10 in-use TV's,
i) what is the probability 4 or more are turned to the Stanley Cup Playoffs?
ii) what is the probability that atmost 7 of them are turned to the Stanley Cup Playoffs?
c) If, instead, the sample space consisted of 100 in-use TVs, what is the probability that atleast 55 of them are turned to the Stanley Cup Playoffs?
Answer by solver91311(24713) About Me  (Show Source):
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The probability of exactly successes in independent trials where the probability of success on any given trial is is:



The probability of or more (aka "at least k")



The probability of or less (aka "at most k")



Note that , so where , which, depending on what you are working with, might save you some arithmetic.


John

My calculator said it, I believe it, that settles it


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