Hi, I need to *prepare* for a test, and this is one of the questions on a practice paper. I am not cheating – I merely want to prepare for my test. Hopefully this qualifies here.

- (15 points) Sheldon, Leonard, Raj and Howard have decided to become silent partners in Stuarts comic book empire. One of their ﬁrst decisions is about opening hours at the weekend. Over one Saturday they have counted the number of customers in the shop in regular intervals of 10 minutes. Can we assume that the frequency of visitors follows a Poisson distribution? Here are the observations:

Number of customers xi 0 1 2 3 4 5 6+

Number of intervals with xi customers 5 7 10 11 5 6 4

I’m clueless here – what do I do? Don’t solve it – just tell me what to do. Does this thing follow a poisson distribution? I checked online and the questions I found all have something like an average rate of whatever/time. How do I find that out here? The last number is 6+(6 and more) so I can’t find any average rates here, can I?

Any help is much appreciated.

submitted by Nevin Manimala Nevin Manimala /u/pushkar000

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