Answer
a.
b. X= The number of patients entering the emergency room
i.P(X>=2) = 1-P(X<2)
=1-0.2725-0.3543
=0.3732
ii.P(X=5) = 0.0084
iii.P(X<3) = P(X=0)+P(X=1)+P(X=2)
= 0.2724+0.3543+0.2303
=0.857
iv.P(X<=1) = P(X=0)+P(X=1)
=0.2725+0.3543=0.6268
Work Step by Step
no