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Binomial Distribution help


New member
Oct 22, 2009
The city of Big Sage, Wyoming has 12 fire stations arranged into districts. The city estimates that each fire station has a 3% chance of being called into service on any given day. The city is concerned that it may not be able to provide enough water if more then one station has to respond to a call on the same day.
a. What is the probability that 2 or more stations will be called the same day?
- Let X represent the number of fire stations called into action on any one day.
- Define the parameters for this problem n=_____ p=______
- Use the binomial table to determine the probability that X will be 2 or greater.
b. What is the expected # of station calls per day?


Senior Member
Feb 17, 2004
Did you read "Read before posting"?