2. In order to examine the differences in ages of teachers among five school districts, a researcher selected five random samples of six teachers' ages in each district. The data collected by the researcher are presented in the table below. Apply one - way ANOVA to decide whether there are differences in teachers' ages among five school districts. Age District Construct ANOVA ta ble Test at 5% significance level to determine if differences in teacher's ages exist among the five districts If required, use Tukey's method for pairwise comparisons to determine which means differ. Qpcrm Construct 95% confidence interval on the mean'u3 . e. Construct individual 95% confidence intervals for 111 p13 and fory4 ,LLl. ANOVA table for completely randomized design with k treatments l Source of variation Degrees of freedom l Sums of squares Mean squares F ratio l Treatment l Error Total 3. In a completely randomized design, 15 experimental units were assigned to each of4 treatments. ANOVA table, which was constructed using sample data, is shown below. Certain values in ANOVA table are missed. a. Fill in the missing values (identified by asterisks] in the given partial ANOVA table. b. Test at 5% significance level to determine if differences exist among the population means. ANOVA table for completely randomized design with k treatments Source of variation Degrees of freedom Sums of square Mean squares Treatment Error Total * 2512