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.