SOLUTION: Help please! Thank you in advance... The number of calls that start every minute in a network of mobile telephony has a distribution of Poisson, and we observe that on average 4

Algebra ->  Probability-and-statistics -> SOLUTION: Help please! Thank you in advance... The number of calls that start every minute in a network of mobile telephony has a distribution of Poisson, and we observe that on average 4      Log On


   



Question 867168: Help please! Thank you in advance...
The number of calls that start every minute in a network of mobile telephony has a distribution of Poisson, and we observe that on average 40 calls of that kind take place at a minute. What is the probability that 35 calls of that kind take place in a minute?

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
P(x = 35) = poissonpdf(40,35) = .0485
For singular Probability: formula P%28x%2C+k+=+average%29=%28e%5E%28-k%29%29%28k%5Ex%29%2Fx%21%29 works well
Shown here is the TI syntax to use with a TI Calculator
Answer shown was found Using stattrek.com Calculator
could also use an Excel formula
Only mention alternatives as cumulative probabilities can get complicated by hand