SOLUTION: According to the Federal Communications Commission, 70% of all U.S. households have VCRs. In a random sample of 15 households, what is the probability that exactly

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Question 1178705: According to the Federal Communications Commission, 70% of all U.S.
households have VCRs. In a random sample of 15 households, what is
the probability that exactly 10 have VCRs?
Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
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According to the Federal Communications Commission, 70% of all U.S.
households have VCRs. In a random sample of 15 households, what is
the probability that exactly 10 have VCRs?
~~~~~~~~~~~~~ 

It is the binomial type probability distribution.


The number of trial n= 15; the probability of the success trial is  0.7,  and the number of success trial k = 10. 


    P = C%5B15%5D%5E10%2A0.7%5E10%2A%281-0.7%29%5E%2815-10%29 = %28%2815%2A14%2A13%2A12%2A11%29%2F%281%2A2%2A3%2A4%2A5%29%29%2A0.7%5E10%2A0.3%5E5 = 0.20613  (rounded).     ANSWER

Solved.

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To see many other similar solved problems, look into the lessons
    - Simple and simplest probability problems on Binomial distribution
    - Typical binomial distribution probability problems
in this site.