How do I Find P ( 2 < X < 7 )? (Stats)
I Got the part A, but don't get how to do part B.
I Got the part A, but don't get how to do part B.
1 Answer
May 16, 2018
Explanation:
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Thus,
Since
P(2<X<7)=6∑x=3P(X=x)
=P(X=3)+P(X=4)+P(X=5)+P(X=6)
We just need to find these 4 discrete probabilities.
P(X=3)=e−6×633!=0.0892
P(X=4)=e−6×644!=0.1339
P(X=5)=e−6×655!=0.1606
P(X=6)=e−6×666!=0.1606
Then
P(2<X<7)
=P(X=3)+P(X=4)+P(X=5)+P(X=6)
=0.0892+0.1339+0.1606+0.1606
=0.5443
=54.43%