a. Fifteen trainees in a technical program are randomly assigned to three different types of instructional approaches, all of which are concerned with developing a specified level of skill in computer-assisted design. The ANOVA table as below: Summary table: Groups Count A 5 B 5 5 Sum 400 425 375 mean 80 85 75 Variance 38.5 35 38.5 ANOVA: Source of Variation Between Groups Within Groups Total SS 250 A 698 df B 14 F 3.348214 MS D 37.33333 i. Complete the ANOVA table above by finding the value of A, B, C and D. (4 marks) ii. The achievement test scores at the conclusion of the instructional unit are reported as in table ANOVA above. Use the analysis of variance (ANOVA) procedure to determine whether there is significant difference in the mean of three different types of instructional approaches with 0.05 levels of significance. (6 marks)