Question 924374
Between the hours of 2 and 4pm, avg/min = 2.5
 Using a TI calculator 0r similarly a Casio fx-115 ES plus
P(x = 2pmin) = poissonpdf(2.5,2) = .2565
P(x = 3pmin) = poissonpdf(2.5,3) = .2138
P(x = 4pmin) = poissonpdf(2.5,4)= .1336