3. A wildlife refuge in South America has Boa Constrictor snakes and Green Anaconda snakes. A biologist working there randomly selected eight adults of each of the two types of snakes, measured their lengths, and recorded their lengths in inches. Boa Constrictor: {16, 17, 18, 18, 18, 18, 19, 20} Green Anaconda: {13, 14, 14, 15, 15, 15, 17, 17} (a) Calculate the mean for the Boa Constrictor. (b) Calculate the mean for the Green Anaconda. (c) Calculate the mean absolute deviation for the Boa Constrictor. (d) Calculate the mean absolute deviation for the Green Anaconda.