Question 898677
Poison Distribution: avg = 1.7 (stattrek.com Calculator)
a) at least one problem: .8173 0r 81.73%%  0r 1 - P(0) = 1-.1827 = .8173
 b) no problem: .1827  0r 18.27%
 c) more than three problems: .0932  0r 9.32%
OR
 P(x>3) = Ti: 1- poissioncdf(1.7, 3)