Question

the snake before the firt on(baeine) and following each treatment seszion. Higher ratings indicated greater fear. The hypothetical data are listed in the table 7 543 6 44 7 543 a) Complete the F-tablc. Round your valua for F to two dedimal placcs.) MS greupa groups (arrar) b) Compute a Bonferruni procedure and interpret che results. (Assexrimentwise alpha equal to 0.03.) Ratings of fear significantly decreased from baseline to Session 3, Ratings of fear also significantly decreased from baseline to Session4 Ratings of fear sigrificantly decreased from baseline to Session 4 Ratinga cf fear significantly docraased from session 1 to Sassion 4. Ratings of fear also cignificantly dearaased from sercion 2 to Session 4 None at the pairwise comparisons are signiricant. Ratinga cf fear significantly docraased from basaline to Sassian 3. Ratings of fcar alsa sign ficantly decreased from session 1 to Sessian 4.

Answer 1

The following table represent the computation of Anova table for the given data: Sessions Baseline 676 729 841 676 13 G-108 628 2922 totalx 26 27 29 26 148 153 179 148 27 729 26 676 529 361 1692464 23 19 From the above table the grand totalG 108 Therefore, the correction factor for the given data is calculated as follows: CF=_=(108). - 583.2 N 20 Sum of squares: From the above table the row sum of square (R.S.S) is 328 Then the total sum of squares is calculated as follows - 628-583.2 - 44.8 Then the sum of squares due to groups is calculated as follows: 2464 - 32.8

The sum of squares due to persons is calculated as follows: 2922 4 1.2 The sum of squares due to error is calculated as follows: 44.8-32.8-1.2 -10.8 Then the Anova table for the given data is expressed as follows: Source of variation b/w groups b/w persons Within groups Total S.S 32.8 1.2 10.8 44.8 Variance Ratio 9.11 2.25 D.F м.s.s 8.2 0.4 0.9 4 12 19