twobeatsoff
New member
- Joined
- Jan 31, 2012
- Messages
- 8
There is a .97 chance that no accident will occur during any particular day at a racetrack of local importance. the probability of one accident a day is .02, and the probability of two accidents is .01.
a. What is the expected number of accidents in a day?
Okay, from here I was able to get 0.97*0 + 0.02*1 + 0.01*2 =0.04 (with help, thanks!!!), but after this, I now need to find the variance. How do I go about doing this?
a. What is the expected number of accidents in a day?
Okay, from here I was able to get 0.97*0 + 0.02*1 + 0.01*2 =0.04 (with help, thanks!!!), but after this, I now need to find the variance. How do I go about doing this?