I've been working on this problem for quite a long time now but I'm not being able to solve it. It goes as follows :(adsbygoogle = window.adsbygoogle || []).push({});

A coffee shop opens his doors from 9.00 to 1.pm.

supposedly 8 customers will enter this shop and stay for a period of half an hour.

Let X be the number of customers present in this shop at a certain time t, what is the probabilty mass function of X ?

I would be very much grateful if you could please help me in solving this problem.

Thank you.

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# Cofee shop customers

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