# binomial distribution

• Mar 22nd 2011, 10:11 PM
sanja85
binomial distribution
A researcher is investigating pedestrian traffic congestion at the entries to a public space. One of the statistics recorded is the number of pedestrians using each entry (passing in or out) in successive 10-minute periods during a working day. If X is the number of pedestrians recorded in each 10-minute interval, would X follow a binomial distribution? Justify your answer.

i recon it would, but i'd be guessing
• Mar 22nd 2011, 10:48 PM
Sambit
It can be Poison as well if the number of people entering that place over time is very small.
• Mar 23rd 2011, 07:28 AM
sanja85
what do you mean by Poison?
• Mar 23rd 2011, 07:38 AM
TheEmptySet
Quote:

Originally Posted by sanja85
A researcher is investigating pedestrian traffic congestion at the entries to a public space. One of the statistics recorded is the number of pedestrians using each entry (passing in or out) in successive 10-minute periods during a working day. If X is the number of pedestrians recorded in each 10-minute interval, would X follow a binomial distribution? Justify your answer.

i recon it would, but i'd be guessing

Why do you think that it would?

The question you need to ask yourself is: Is the experiment a Bernoulli trial if the answer is yes then it can be modeled with a binomial distribution.
• Mar 23rd 2011, 07:55 AM
sanja85
thank you for that :))))
• Mar 23rd 2011, 10:57 PM
Sambit
Quote:

Originally Posted by sanja85
what do you mean by Poison?

It is a discrete probability distribution Poisson distribution - Wikipedia, the free encyclopedia