The average starting salary for graduates at a university is $33,000 with a standard deviation of $2,000. If a histogram of the data shows that it takes on a mound shape, the empirical rule says that approximately 68% of the graduates would have a starting salary between:
- 31,000 and 35,000
- 29,000 and 37,000
- 25,000 and 41,000
- 29,000 and 37,000