Your One-Way ANOVA Research Hypothesis Was That Average Years of Schooling

Your one-way ANOVA research hypothesis was that average years of schooling (EDUC) differed between strong Republicans, Independents, and strong Democrats. On the basis of the following output, which pairs of groups significantly differ?
Multiple Comparisons
EDUC Tukey HSD
$\begin{array}{|ll|r|r|r|}\hline & & & & \\\text { (I) POLPARTY } & \text { (J) POLPARTY } & \begin{array}{c}\text { Mean } \\\text { Difference (1- } \\\mathrm{J}\end{array} & \text { Std. Error } & \text { Sig. } \\\hline 1 \text { strong Republican } & 4 \text { independent } & 1.647^{*} & .602 & .018 \\& 7 \text { strong Democrat } & -471 & .606 & .718 \\\hline 4 \text { independent } & 1 \text { strong Republican } & -1.647^{*} & .602 & .018 \\& 7 \text { strong Democrat } & -2.118^{*} & .511 & .000 \\\hline 7 \text { strong Democrat } & 1 \text { strong Republican } & 471 & .606 & .718 \\& 4 \text { independent } & 2.118^{*} & .511 & .000 \\\hline\end{array}$
$*$ . The mean difference is significant at the $0.05$ level.

A) no pairs significantly differ
B) (strong Republicans & strong Democrats)
C) (strong Republicans & Independents) and (Strong Democrats & Independents)
D) all pairs significantly differ

Correct Answer:

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