SOLUTION: If 15% of water bills are paid late, what is the probability that two

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Question 432576: If 15% of water bills are paid late, what is the probability that two
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

If 15% of water bills are paid late:

P(2 randomly selected water bills will both be paid late) = .15^2 = .0225



Note: The probability of x successes in n trials is: 

P = nCx* p%5Ex%2Aq%5E%28n-x%29 where p and q are the probabilities of success and failure respectively. 

In this case p = .15 and n is 2

nCx = n%21%2F%28x%21%28n-x%29%21%29