Suppose that X is a discrete random variable with

A nurse has found 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 11%. Of the next 25 patients calling in claiming to have the flu, we are interested in how many actually have the flu. Let the random variable ✗ be the number of patients, out of the 25 who called the medical help line, that actually have the flu. How is X distributed? ✗~B 25 0.11 Find the probability that exactly 9 of the 25 patients actually have the flu. Find the probability that fewer than 8 of the 25 patients actually have the flu. Find the mean of the distribution. Find the standard deviation of the distribution. Part 2 of 2

If the critical t-stat for alpha 0.05 two tailed is s 2.021, is the result significant? no, p. 0.05 yes, p > 0.05 no, p<0.05 yes, p<0.05

Suppose that40%of the applicants for a certain job possess advanced training in computerprogramming. Applicants are interviewed sequntially and are selected at random from the pool. Find theprobability that the 4th applicant with advanced training in programming is found on the 8th interview.To answer this question, first identify the random variable, its distribution and the parameter(s) of the distribution.