A researcher is interested whether vitamin supplements help with preventing the cold. The placebo group drank fruit juice that actually had no vitamins at all. The researcher then measured the number of days each participant spent sick in a month.
$\begin{array}{lcc}
\hline \text { Source } & S S & d f& MS &F \
\hline \text { Factor 1 } & 577.2 & 1 \
\text { Factor } 2 & 2586.4 & 1 \
\text { Factor }{ }^{*} \text { Factor 2 } &3359.7 & \
\text { Error } & 14235.2 & 26\
\hline
\end{array}$ Is a post-hoc test necessary? If so, conduct a Tukey HSD at the .05 level. The critical value is 3.514

Question

A researcher is interested whether vitamin supplements help with preventing the cold. The placebo group drank fruit juice that actually had no vitamins at all. The researcher then measured the number of days each participant spent sick in a month.
 $\begin{array}{lcc}
\hline \text { Source } & S S & d f& MS &F \
\hline \text { Factor 1 } &  577.2 & 1 \
\text { Factor } 2 & 2586.4 & 1 \
\text { Factor }{ }^{*} \text { Factor 2 } &3359.7 &   \
\text { Error } & 14235.2  & 26\
\hline
\end{array}$ Is a post-hoc test necessary? If so, conduct a Tukey HSD at the .05 level. The critical value is 3.514

Quizplus · Accepted Answer

The Answer of A researcher is interested whether vitamin supplements help with preventing the cold. The placebo group drank fruit juice that actually had no vitamins at all. The researcher then measured the number of days each participant spent sick in a month.
 $\begin{array}{lcc}
\hline \text { Source } & S S & d f& MS &F \
\hline \text { Factor 1 } &  577.2 & 1 \
\text { Factor } 2 & 2586.4 & 1 \
\text { Factor }{ }^{*} \text { Factor 2 } &3359.7 &   \
\text { Error } & 14235.2  & 26\
\hline
\end{array}$ Is a post-hoc test necessary? If so, conduct a Tukey HSD at the .05 level. The critical value is 3.514

A Researcher Is Interested Whether Vitamin Supplements Help with Preventing