# Poisson Distribution

• Feb 17th 2010, 12:57 PM
aaronrj
Poisson Distribution
Suppose that the number of inquiries arriving at a certain interactive system follows a Poisson distribution with arrival rate of 12 inquiries per minute. Find the probability of 10 inquiries arriving

(a) in a 1-minute interval
(b) in a 3-minute interval
• Feb 18th 2010, 01:58 AM
mr fantastic
Quote:

Originally Posted by aaronrj
Suppose that the number of inquiries arriving at a certain interactive system follows a Poisson distribution with arrival rate of 12 inquiries per minute. Find the probability of 10 inquiries arriving

(a) in a 1-minute interval
(b) in a 3-minute interval

(a) X ~ Poisson(mean = 12). Calculate Pr(X = 10) using the usual pmf.
(b) Y ~ Poisson(mean = 36). Calculate Pr(Y = 10) using the usual pmf.

If you need more help, please show what you've done and say where you are stuck.
• Feb 19th 2010, 11:26 PM
matheagle
Didn't I just do this here?
Or is this a double post?

http://www.mathhelpforum.com/math-he...tribution.html
• Feb 20th 2010, 12:39 AM
mr fantastic
Quote:

Originally Posted by matheagle
Didn't I just do this here?
Or is this a double post?

http://www.mathhelpforum.com/math-he...tribution.html