I need help with this probs and statistics question

Question

A baseball franchise finds that the attendance at its home hames has a mean of 16000 and a standard deviation of 4000. What percent of the home games have attendances between 12000 and 20000 people?

Answer 1

68.27% of normally distributed data lies between -1 std. deviation & +1 std. deviation, which is exactly the situation that you described (centered at mean 16,000 and to the left by 4,000 and to the right by 4,000, the latter number being the std. dev.)