The National Center for Health Statistics estimates that 16.9 percent of U.S. children and adolescents aged 2 to 19 were

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The National Center for Health Statistics estimates that 16.9
percent of U.S. children and adolescents aged 2 to 19 were obese in
2009-2010. Assume that this obesity rate holds true today. If you
were to randomly select 20 U.S. children or adolescents, find each
of the following:
Note1: carry at least 6 digit precision for any intermediate
calculations then round your answer to 4 decimal places
Note2: Any value that is less than 0.0001, (1 x
10-4) , can be rounded to 0
A) The probability that at most 2 people are obese is:

B) The probability that exactly 5 people are obese is:

C) The probability that none of the people are obese
is:

D) The probability that at least 2 people in the sample will be
obese is: