Question 218976: A recent study shows that 40% of the babies who weigh less than 5.5 pounds at birth are likely to develop high blood pressure as adults. If 12 babies who weighed less than 5.5 pounds at birth are selected at random, what is the probability (correct to three decimal places) that at most two of these babies will develop high blood pressure as adults?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A recent study shows that 40% of the babies who weigh less than 5.5 pounds at birth are likely to develop high blood pressure as adults. If 12 babies who weighed less than 5.5 pounds at birth are selected at random, what is the probability (correct to three decimal places) that at most two of these babies will develop high blood pressure as adults?
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It is a binomial problem with n=12, p = 0.40 ; 0<=x<=2
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P(0<=x<=2) = binomcdf(12,0.4,2) = 0.0834..
Cheers,
Stan H.
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