Question 826488: A national health organization predicts that 20% of American adults will get the
flu this season. If a sample of 100 adults is selected from the population…
a. How many of those people are likely to get the flu?
b. What is the probability that at least 25 of the people will be diagnosed?
I have the first answer, just putting both down for tutor's understanding. Confused on the second one on how to answer it.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A national health organization predicts that 20% of American adults will get the
flu this season. If a sample of 100 adults is selected from the population…
Binomial Problem with n = 100 and p(flu) = 0.20
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a. How many of those people are likely to get the flu?
Mean = np = 0.20*100 = (20/100)*100 = 20
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b. What is the probability that at least 25 of the people will be diagnosed?
P(25<= x <=100) = 1 - binomcdf(100,0.2,24) = 0.1314
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Cheers,
Stan H.
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