<PRE><B>Question 1059033</B>
Based on data from the National Center for Health Statistics, an estimated percentage of adults to have HIV test at some point of life is 32%. Consider a random sample of 15 adults at that time, and find out the probability that the number of adults having been tested for HIV in the sample.
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Binomial Problem with n = 15 and p = 0.32
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a.	P(3 adults) = 15C3*0.32^3*0.68^12 = binompdf(15,0.32,5) = 0.2130
b.	P(Less than 5 adults) = binomcdf(15,0.32,4) = 0.4477 
c.	P(Between 5 and 9 (inclusive)) = 
binomcdf(15,0.32,9)-binomcdf(15,0.32,4) = 0.5461
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Cheers,
Stan H.
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