Question

I need help with just the last question

3. 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, weighed 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 ratio for the two types of monkeys.
(c) What inference can be made about the weight of both types of monkeys? Explain.

Here's what I have so far:
MAD for Howler Monkey: 0.75
MAD for the Spider Monkey: 14
Means to MAD Ratio for the Howler Monkey and the Spider Monkey: 2.6249

Answer 1

Given:

howler monkey: {15, 16, 17, 17, 17, 17, 18, 19}

spider monkey: {12, 13, 13, 14, 14, 14, 16, 16}

The mean of the first set (howler monkey) = (15 + 16 + 17 + 17 + 17 +17 + 18 + 19)/ 8

The sum of all weights is divided by the number of monkeys weighed (n = 8)

mean = 17

Do the same for the second set (spider monkey) = 12+ 13 + 13+ 14 + 14+ 14 +14 +16 + 16 / 8

mean = 15.75

the ratio of the two is 17:15.75 or 1.08 is to 1

the MAD for the howler monkey is 0.75