Does fibrolytic enzyme level in feedlot cattle affect cattle weight gain, on average? Researchers randomly assigned 20 feedlot cattle to four groups, with each group being fed a diet containing a different enzyme level. Cattle weight gain (in kilograms) was recorded over the time of the study. There was no obvious deviation from Normality for these data. The findings are summarized below:
When checking the assumptions for this ANOVA test, what should we conclude?
$$\begin{array} { | l | l | l | l | }
\hline \text { Enzyme level } & n & \text { mean } & \text { std. dev. } \
\hline \text { None } & 5 & 51.8 & 4.9 \
\hline \text { Low } & 5 & 55.0 & 7.8 \
\hline \text { Medium } & 5 & 67.4 & 9.6 \
\hline \text { High } & 5 & 48.8 & 7.3 \
\hline
\end{array}$$

Question

Does fibrolytic enzyme level in feedlot cattle affect cattle weight gain, on average? Researchers randomly assigned 20 feedlot cattle to four groups, with each group being fed a diet containing a different enzyme level. Cattle weight gain (in kilograms) was recorded over the time of the study. There was no obvious deviation from Normality for these data. The findings are summarized below:
When checking the assumptions for this ANOVA test, what should we conclude?
 $$\begin{array} { | l | l | l | l | } 
\hline \text { Enzyme level } & n & \text { mean } & \text { std. dev. } \
\hline \text { None } & 5 & 51.8 & 4.9 \
\hline \text { Low } & 5 & 55.0 & 7.8 \
\hline \text { Medium } & 5 & 67.4 & 9.6 \
\hline \text { High } & 5 & 48.8 & 7.3 \
\hline
\end{array}$$

Quizplus · Accepted Answer

The assumption of normality is reasonably met given the lack of obvious deviation from normality, and with equal sample sizes across groups, the assumption of equal variances is less critical. Independence is assumed by the random assignment of cattle to groups.

Does Fibrolytic Enzyme Level in Feedlot Cattle Affect Cattle Weight