Awildlife 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.