The question is:
Shutouts in the National Hockey League occur randomly and independently at a rate of 1 every 20 games. Calculate the probablity of the following events.
a) 2 shutouts in the next 10 games
b) 25 shutouts in 400 games
c) a shutout in tonight's game
**note** a) and c) are to be done manually using the poisson table and b) is to be done using excell.