91Ó°ÊÓ

Use the following information to answer the next eight exercises. Groups of men from three different areas of the country are to be tested for mean weight. The entries in the table are the weights for the different groups. The one-way ANOVA results are shown in Table 13.13. $$\begin{array}{|l|l|l|}\hline \text { Group 1 Group } & {2} & {\text { Group } 3} \\ \hline 216 & {202} & {170} \\ \hline 198 & {213} & {165} \\ \hline 240 & {284} & {182} \\ \hline 187 & {228} & {197} \\ \hline 176 & {210} & {201} \\ \hline\end{array}$$ What is the df for the numerator?

Use the following information to answer the next eight exercises. Girls from four different soccer teams are to be tested for mean goals scored per game. The entries in the table are the goals per game for the different teams. The one-way ANOVA results are shown in Table 13.14. $$\begin{array}{|l|l|l|}\hline \text { Team } 1 & {\text { Team } 2} & {\text { Team } 3} & {\text { Team } 4} \\ \hline 1 & {2} & {0} & {3} \\ \hline 2 & {3} & {1} & {4} \\ \hline 0 & {2} & {1} & {4} \\ \hline 3 & {4} & {0} & {3} \\\ \hline 2 & {4} & {0} & {2} \\ \hline\end{array}$$ What is SS within?

Are the mean numbers of daily visitors to a ski resort the same for the three types of snow conditions? Suppose that Table 13.27 shows the results of a study. $$\begin{array}{|c|c|c|}\hline \text { Powder } & {\text { Machine Made }} & {\text { Hard Packed }} \\ \hline 1,210 & {2,107} & {2,846} \\ \hline 1,080 & {1,149} & {1,638} \\ \hline 1,537 & {862} & {2,019} \\ \hline 941 & {1,870} & {1,178} \\ \hline & {1,528} & {2,233} \\ \hline & {1,382} & {} \\\ \hline\end{array}$$ Assume that all distributions are normal, the four population standard deviations are approximately the same, and the data were collected independently and randomly. Use a level of significance of 0.05.