We will assume each game is independent and that the probability of a tie is fixed for every game. Then this situation follows a binomial distribution.
Let X be the number of games with a tie: then ~
For a binomial distribution,
and
I got a question about probability.....
The probability that a tennis set will go to a tiebreaker is 14%. In 80 randomly selected tennis sets, what is the mean and std dev. of the number of tie breakers?
a) mean: 10.4; std dev: 3.1
b) mean: 10.4; std dev: 3.35
c) mean: 11.2; std dev: 3.10
d) mean: 11.2; std dev 3.35
Thanks everybody