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Binomial Tables
Message posted by Kathy (via 64.12.104.37) on June 6, 2001 at 2:49 AM (ET)
The owners of a florida motel have noticed that in the long run about 40% of the people who stop to inquire about a room for the night actually rent a room. If 15 people stop to inquire about rooms, determine the probability that exactly 10 will rent a room. (use binomial tables)
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Re: Binomial Tables
Message posted by nancy diehl (via 129.176.151.122) on June 6, 2001 at 2:33 PM (ET)
What you need to understand about the binomial tables is that these are cumumlative probabilities. So, when you look in the table under n=15 and x=10 under a p=.40 you will see a value of .991. That's the probability for x=0,1,...out to 10; cumulative. So to get the probablity for exactly 10, you need to subract the value at x=9 from the value at x=10 to get the exact value at 10.
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