Nine percent of people in a city eligible to donate blood actually do. You randomly select four eligible blood donors and ask them if they donate blood. Complete parts? (a) through? (c) below.
(a) Construct a binomial distribution for n=4 and p=0.09
(b) Graph the binomial distribution using a histogram and describe its shape.
(c) What values of the random variable x would you consider? unusual?
On? average, ____ eligible adults out of every four gives blood. Since the square root equals npq = ____, the standard deviation of this distribution is _____ adults. The values _____ would be unusual because the associated probability (probabilities) is (are) _____ 0.05.