Question 495015: PLEASE HELP! I CANNOT FIGURE OUT NOR UNDERSTAND HOW TO DO THIS PROBLEM.
Keiths Florists has 16 delivery trucks, used mainly to deliver flowers and flower arrangements in the Greenville, South Carolina, area. Of these 16 trucks, 8 have brake problems. A sample of 6 trucks is randomly selected. What is the probability that 2 of those tested have defective brakes? (Round your answer to 4 decimal places.)
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Keiths Florists has 16 delivery trucks, used mainly to deliver flowers and flower arrangements in the Greenville, South Carolina, area.
Of these 16 trucks, 8 have brake problems.
A sample of 6 trucks is randomly selected.
What is the probability that 2 of those tested have defective brakes?
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Binomial Problem with n = 6 and p(defective) = 8/16 = 1/2
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P(x = 2) = 6C2(1/2)^2(1/2)^4 = 15(1/64) = 15/64 = 0.2344
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Cheers,
Stan H.
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