SOLUTION: 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

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
---------------------------------------------------------
a. How many of those people are likely to get the flu?
Mean = np = 0.20*100 = (20/100)*100 = 20
-------------------------------------
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
====================
Cheers,
Stan H.

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