A researcher collected data from youth with behavioural problems to see if introducing a token economy (tokens rewarded for good behaviour) would reduce the number of disruptive behaviours the children exhibited. Disruptive behaviours were measured at 3 times over a 3-week span (1 week before token economy introduced, 1 week after token economy introduced, 2 weeks after token economy introduced). The data are shown below. Assume all assumptions have been met. 1 week before I week after 2 weeks token token after token economy economy economy introduced introduced introduced Marginal Means Child 1 6 5 4 5.00 Child 2 5 3 4 4.00 Child 3 5 3 1 3.00 Marginal Grand Mean = Means 5.33 3.67 3.00 4.00 Question 16 (1 point) Saved MacBook Air 20 DII F3 DD F4 F5 F6 F7 F8 F9 F10 $ % & 4 5 6 7 O - 8 9 R T Y U O F G H C KQuestion 18 (1 point) The Mean Square Error is equal to: O 2.07 3.37 .84 1.24 8.00 Question 19 (1 point) What is your critical value and what conclusion would you draw based on your analysis? 4.26; reject the null and conclude that there is a significant difference between at least two of the groups. 18.00; fail to reject the null and conclude that all three groups are significantly different. MacBook Air 20 DII DD F3 F4 F5 F6 F7 F8 F9 F10 % > & * 3 4 5 6 8 9 O E R Y U OQuestion 19 (1 point) What is your critical value and what conclusion would you draw based on your analysis? 4.26; reject the null and conclude that there is a significant difference between at least two of the groups. 18.00; fail to reject the null and conclude that all three groups are significantly different. 6.94; fail to reject the null and conclude that there are no differences between any of the groups. 4.74; reject the null and conclude that there is a significant difference between at least two of the groups. 4.26; fail to reject the null and conclude that there are no differences between any of the groups. The following three questions are based on the study below. MacBook Air 20 988 DII DD F3 F4 F5 F6 F7 F8 F9 F1 $ % & * 4 5 6 8 O R T Y U O