Oh, I'm sorry! I just read them again and while 3 asks for the expected number of tankers to arrive on a given day, 5 asks for the expected number of tanker served on a given day. Theoretically, any number of tankers could arrive on a given day and my response to 3 was correct. But no more that...
Well, first i will have to make an apology for putting the question in this forum, but was not really sure where else i could put it. :)
The assignment is:
The number of oil tankers, arriving at a certain refinery on one day, follow a poisson distribution with the parameter µ=2. The present...