Reference no: EM133477200

Case: A student performs an experiment to measure weight gain in mice that eat rodent chows varying in protein and fat content. The positive control in this experiment is standard rodent chow with 25% protein and 5% fat contents. The negative control is given water only (no food). The protein and fat contents of four experimental chows are shown in the table.

Experimental Chow      Protein content     Fat content
1            30%               0%
2            20%              10%
3            15%              15%
4            10%              20%

Based on the information provided, identify the hypotheses that could be appropriate for the experiment, assuming the protein and fat contents of chow are related to weight gain.

Question 1: A mouse fed chow with lower protein and higher fat contents will gain more weight than a mouse fed chow with higher protein and lower fat contents.

Question 2: A mouse that gains weight from eating one type of chow will then be fed a different type of chow to offset the initial weight gain.

Question 3: A mouse will prefer chow with higher protein and lower fat contents over chow with lower protein and higher fat contents because it leads to less weight gain.

Question 4: A mouse fed chow with higher protein and lower fat contents will gain more weight than a mouse fed chow with lower protein and higher fat contents.