Question

A researcher carries out a randomized comparative experiment with young rats to investigate the effects of a toxic compound in food. She feeds the control group a normal diet. The experimental group receives a diet with 2500 parts per million of the toxic material. After 8 weeks, the mean weight gain is 335 grams for the control group and 289 for the experimental group.

What is true regarding the two numbers "335" and "289"?

Answer 1

The numbers "335" and "289" are mean weight gains for control and experimental groups of young rats, respectively, in an experiment, indicating that the toxic compound may have affected the rats' growth.

Step-by-step explanation:

The numbers "335" and "289" represent the mean weight gain of two groups of young rats subjected to different dietary conditions in a controlled experiment. The control group, which was fed a normal diet, had a mean weight gain of 335 grams, while the experimental group, which received a diet with 2500 parts per million of a toxic material, had a mean weight gain of 289 grams. This difference in mean weight gain suggests that the toxic compound could have a negative effect on the rats' growth over the 8-week period.