An experiment is performed to test the effects of a high fat diet on kangaroos. Fifty baby roos are randomly separated into two groups of 25 each. Group 1 is fed a normal diet (balanced proteins, carbohydrates, fats, vitamins, etc.). Group 2 is fed the same thing EXCEPT they are given much higher proportions of fat. The enclosures are kept clean and the animals are given new food and water daily. After six months, all the roos are weighed. The average weight of Group 1 in kilograms is 8.2. The average weight for Group 2 is 12.6 kg.
a) Group 1 roos weigh more than Group 2 roos.
b) Group 2 roos weigh more than Group 1 roos.
c) Group 1 roos and Group 2 roos weigh the same.
d) The weight difference between Group 1 and Group 2 roos cannot be determined.
