posted by erin on .
the probability that a football game will go into overtime is 17%. In 240 randomly selected football games, what is the mean and the standard deviation of the number that went into overtime
This is a binomial distribution of n=240 trials with probability of success p=0.17 and of failure q=1-0.17=0.83.
variance = npq=33.864
Std dev = √(33.864)=5.82