(1 point) Animals and people that take in more energy than they expend will get fatter. Here are data on 12 rhesus monkeys: 6 lean monkeys (4% to 9% body fat) and 6 obese monkeys (13% to 14% body fat). The data report the energy expended in 24 hours (kilojoules per minute) and the lean body mass (kilograms, leaving out fat) for each monkey.
| Lean | Obese |
| Body Mass | Energy | Body Mass | Energy |
| 6.8 | 1.21 | 8.5 | 0.93 |
| 7.2 | 1.02 | 9.8 | 1.4 |
| 9.4 | 1.46 | 10.6 | 1.18 |
| 9.8 | 1.65 | 12.4 | 1.43 |
| 9.8 | 1.07 | 11.8 | 1.23 |
| 9.3 | 1.2 | 11.5 | 1.31 |
(a) What is the mean lean body mass of the lean monkeys?
ANSWER x¯= kilograms.
(b) What is the mean lean body mass of the obese monkeys?
ANSWER x¯= kilograms.
Answer:
a)
To determine the mean lean body mass of the lean monkeys
Mean is given as the average of the given lean monkeys
i.e.,
Mean for lean monkeys = Sum of samples / Total samples
= (6.8 + 7.2 + 9.4 + 9.8 + 9.8 + 9.3) / 6
= 52.3 / 6
= 8.7167
Mean for lean monkeys = Xbar = 8.7167 kg
b)
To determine the mean lean body mass of the obese monkeys
Mean = Sum of samples / Total samples
= (8.5 + 9.8 + 10.6 + 12.4 + 11.8 + 11.5) / 6
= 64.6 / 6
= 10.7667
Mean for obese monkeys = Xbar = 10.7667 kg
(1 point) Animals and people that take in more energy than they expend will get fatter....
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