Stats Question (studying for exam)
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Stats Question (studying for exam)

[From: ] [author: ] [Date: 11-11-09] [Hit: ]
35)^x (.= 0.......
An insurance salesman sold life insurance to 5 men.
The probability of still being alive 30 years later is .35.
What is the probability that 3 of the 5 are still alive 30 years later?

-
Jazz -

Sum a Binomial probability from x=3 to x=5: (5Cx)(.35)^x (.65)^(5-x)

= 0.2352

Hope that helps
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