DS 10.3.7 gives a data set of the number of arrivals at a hospital emergency room during

Question:

DS 10.3.7 gives a data set of the number of arrivals at a hospital emergency room during one-hour periods. Is there any evidence that it is not reasonable that the number of arrivals are modeled with a Poisson with mean λ = 7?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...