Homework Help: statistics

Posted by Sabrina on Tuesday, April 24, 2012 at 9:32am.

A history professor finds that when he schedules an office hour at the 1030 am time slot an average of 3 students arrive. Use the poisson distribution to find the probability that in a randomly selected office hour in the 1030 am time slot exactly 5 students will arrive.

statistics - MathGuru, Tuesday, April 24, 2012 at 8:21pm
Poisson distribution with a mean of m:
P(x) = e^(-m) m^x / x!

P(5) = e^(-3) 3^5 / 5!

I'll let you finish the computation.
statistics - Sabrina, Tuesday, April 24, 2012 at 8:34pm
Thank you.. It is 0.1008..
statistics - MathGuru, Thursday, April 26, 2012 at 7:34pm
Correct!

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