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statistics math problem..?
During the period of time that a local university takes phone-in registrations, calls come in at the rate of one every two minutes.
What is the expected number of calls in one hour?
What is the probability of three calls in five minutes (to 4 decimals)?
What is the probability of no calls in a five-minute period (to 4 decimals)?
1 Answer
- M3Lv 710 years agoFavorite Answer
poisson distribution
mean # of calls in 5 mins, m = (1/2)*5 = 2.5
E[x] =2.5*(60/5) = 30 <---------
P[3] = e^-2.5 * 2.5^3 /3! = .2138 <------
P[0] = e^-2.5 = .0821 <--------
