SOLUTION: if 75 percent of people own a microwave, find the probability that 4 randomly selected people will say they own a microwave.

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Question 389598: if 75 percent of people own a microwave, find the probability that 4 randomly selected people will say they own a microwave.
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!


Hi,         

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

P = nCx*  where p and q are the probabilities of success and failure respectively. 

In this case p = .75 & q = .25

nCx = 

P(all 4 randomly selected owning a microwave) = (.75)^4 = .3164 

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