1 000 babies in an intensive care nursery Suppose that 1 000 babies from healthy baby nurseries were randomly surveyed Find the probability that exactly two babies were born deaf Use the following information to answer the next four exercises Recently a nurse commented that when a patient calls the medical advice line claiming to have the flu the chance that he or she truly has the flu and not just a nasty cold is only about 4 percent Of the next 25 patients calling in claiming to have the flu we are interested in how many actually have the flu 83 Define the random variable and list its possible values 84 State the distribution of X 85 Find the probability that at least four of the 25 patients actually have the flu 36 On average for every 25 patients calling in how many do you expect to have the flu 87 People visiting video rental stores often rent more than one DVD at a time The probability distribution for DVD rentals per customer at Video to Go is given Table 4 37 There is a five video limit per customer at this store so nobody ever rents more than five DVDs X 0 1 2 3 4 5 Table 4 37 P x 03 50 24 07 04 a Describe the random variable X in words b Find the probability that a customer rents three DVDs