An archaeologist encounters a collection of twenty skeletons during a dig. He uses modern dating tools to assign an approximate age to each skeleton (is. he can figure out how old the person was when they died). He records the following ages: 11,4, 6, 9, 1, 5, 12, 8, 20, 17, 3, 5, 16, 11, 2, 3, 1, 1, 19, 6 Assuming that the population was stationary at the time, what were the birth and death rates for this ancient population? Please round your answers to 3 significant figures