Recently, a nurse commented that when a patient calls themedical advice line claiming to have the flu, the chance that he orshe truly has the flu (and not just a nasty cold) is only about 4%.Of the next 25 patients calling in claiming to have the flu, let ?be the number of patients in the sample that actually have theflu.
Explain why ? can be treated as a binomial random variable.
• Identify ? (the number of trials):                  ?= ___________
• Specify (in words) which event would be defined as a“success”
• Explain why the trials may be considered independent:
• Give the value of ? (the probability of success): ? =___________
b) On average, for every 25 patients calling in, how many do youexpect to actually have the flu?
c) What is the probability that exactly 5 of the 25 patientsactually have the flu?
d) What is the probability that at least two of the 25 patientsactually have the flu?
