A Researcher Is Testing the Percent Weight Gain on Mice

Multiple Choice

A researcher is testing the percent weight gain on mice of varying ages based upon the diet they eat. He has 4mice in each age category: 6 months, 9 months, 12 months and 15 months. They mice are weighed, fed onlyone of four diets and weighed after 1 month. The weight gain percent is then recorded. The data is givenbelow. Test at α = 0.05 if there is a difference in weights. $$\begin{array} { | l | c | c | c | c | } \hline & \text { Diet A } & \text { Diet B } & \text { Diet C } & \text { Diet D } \\\hline \text { 6 months } & 5.2 & 5.3 & 5.8 & 5.6 \\\hline 9 \text { months } & 5.0 & 5.7 & 5.6 & 5.2 \\\hline 12 \text { months } & 5.3 & 6.1 & 6.1 & 5.0 \\\hline 15 \text { months } & 4.9 & 6.4 & 5.7 & 5.1 \\\hline\end{array}$$

A) Diet does result in significantly different weight gains.
B) Diet does not result in significantly different weight gains.