1. ## Poison distribution

I'd appreciate help with the following:

X follows a Posion distribution with an average of = 6.30 Answer to four decimal places not two percentage decimal points.

1. P(x=3)= I got 0.0765

2. P(x>3)= I don't know how to do it.

Thanks.

2. Originally Posted by 10219929
I'd appreciate help with the following:

X follows a Posion distribution with an average of = 6.30 Answer to four decimal places not two percentage decimal points.

1. P(x=3)= I got 0.0765

2. P(x>3)= I don't know how to do it.

Thanks.
P(x>3) = 1 - P(x<=3) = 1 - P(x=0) - P(x=1) - P(x=2) - P(x=3).

3. Originally Posted by 10219929
I'd appreciate help with the following:

X follows a Posion distribution with an average of = 6.30 Answer to four decimal places not two percentage decimal points.

1. P(x=3)= I got 0.0765
looks correct to me.

RonL

I finally got P(X>3)= 0.8736, could you guys confirm if I did it right?

Thanks.

5. Originally Posted by 10219929
I finally got P(X>3)= 0.8736, could you guys confirm if I did it right?

Thanks.
It's correct.

FYI, I used the POISSON function in a spreadsheet to get the answer.