A wildlife refuge in South America has howler monkeys and spider monkeys. A biologist working there randomly selected eight adults of each type of monkey, weighted them, and recorded their weights in pounds. Howler monkey: {15,16,17,17,17,17,18,19} spider monkey: {12,13,13,14,14,14,16,16} (A) calculate the mean and Mad for each type of monkey. (B) calculate the means -to-MAD ration for the two types of monkeys. (C) what inference can be made about the weight of both types of monkeys? Explain.