P(X=0)=0.03P(X=1)=0.18P(X=2)=0.24P(X=3)=0.28P(X=4)=0.10P(X≥5)=0.17
(a)
P(X>2)=1−P(X≤2)=1−[P(X=0)+P(X=1)+P(X=2)]=1−[0.03+0.18+0.24]=1−0.45=0.55
(b)
P(X≤4)=P(X=0)+P(X=1)+P(X=2)+P(X=3)+P(X=4)=0.03+0.18+0.24+0.28+0.1=0.83
(c)
P(X≥4)=P(X=4)+P(X=5)=0.10+0.17=0.27
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