Question 5

4. A school administration was given three educational packages to help improve students' reading skill in English. To test the effectiveness of the packages, thirty groups of students were each assignee to use one of the packages. At the end of the testing period, data on the level of students' reading skill for student groups assigned to three packages has been collected. The scores appear in ANOVA table below. ANOVA TABLE Sum of df Mean F squares square Between 50.067 A groups Within 24.900 B groups Total FF (.05) = 3.47 At the 0.05 level of significance, is there sufficient evidence to reject the claim that these methods of sighting are equally effective? (a) State the appropriate null and alternative hypotheses. (b) Calculate the degree of freedom (df), between-group, A and within-group, B. (c) Calculate the between-group and within-group mean square. (d) Calculate F ratio. (e) Complete the ANOVA summary table. (f) State your decision and conclusion for the test