On the average five customers visit a children department store each hour. Using Poisson distribution, calculate the probability of three customers shop at the store.
Use this formula, which should be in your textbook! p=[e^-u. U^x]/x!=e^-5.5^3 / 3!=~14%. At least, that is what I think, but no guatantees!!.
e is the base of natural logarithms (2.7183) μ is the mean number of "successes" x is the number of "successes" in question
