Question 861857
 p = .8  and  n = 6
people over 60 years of age is selected, find these probabilities.
 a. Exactly 4 people will wear glasses. binompdf(6,.8,4)
 b. At most 2 people will wear glasses. binomcdf(6, 8,2)
 c. At least 2 people will wear glasses. 1 - bin0mcdf(6,.8,1)