Consider an Experiment in Which Adult Laboratory Mice Were Fed

question 48

Multiple Choice

Consider an experiment in which adult laboratory mice were fed one of three diets: high fat, low fat, and a control diet. The mice were weighed, received these diets for 2 weeks, and then were weighed again. The table below shows the results of the experiment.
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​ $\begin{array}{|l|l|l|}\hline \text { Diet } & \text { Gained weight } & \text { Lost weight } \\\hline \text { High Fat } & 79 & 21 \\\hline \text { Low Fat } & 30 & 69 \\\hline \text { Control } & 70 & 30 \\\hline\end{array}$
-Assuming a null hypothesis of no relationship between diet and weight gain, which of the following values is closest to the expected count of individuals in the control group that gained weight?

• A) 20
• B) 40
• C) 60
• D) 70

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