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OpenStudy (anonymous):
A Statistical Tutorial Centre has been designed to handle a maximum of 25 students per day. Suppose that the number X of students visiting this centre each day is a normal random variable with mean 15 and variance 16. Part a) What is the return period for this centre rounded to the nearest day? how should i start this question?
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OpenStudy (anonymous):
i did x~N(15,16) p(x>25) and got 161. is it correct?
OpenStudy (kropot72):
The return period = 1/p where p = probability that x>25. Now you need to find the z-score for 25............
OpenStudy (kropot72):
161 days is correct :)
OpenStudy (anonymous):
thank you!
OpenStudy (kropot72):
You're welcome :)
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