Question 283811
Hits on a personal web site occur quite infrequently. They occur randomly and independently with an average of five per week.
Poission Problem:
lambda = 5 
a) Find the probability that the site gets 10 or more hits per week.
I used a TI calculator to get:
P(x>=10) = 1-poissoncdf(5,9) = 0.0318..
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b) Determine the probability that the site gets 20 or more hits in two weeks.
Not sure. What is your setup for this?
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Cheers,
Stan H.