9. Gravetter/Wallnau/Forzano, Essentials - Chapter 12-End-of-chapter question 13 The following data were obtained from an independent-measures research study comparing three treatment conditions. Treatment II n-5 I n-7 N-21 T-168 T = 140 G=587 SS186 SS80 SS 1681 17035 III n-9 T-279 Use an ANOVA with a- .05 to determine whether there are any significant mean differences among the treatments. (Round your answers to two decimal places, including any intermediate calculations) Source Between treatments Within treatments Total SS df MS The critical value of F is Conclusion: O Reject the null hypothesis; there are no significant differences among the three treatments. Fail to reject the null hypothesis; there are no significant differences among the three treatments. O Reject the null hypothesis; there are significant differences among the three treatments. Fail to reject the null hypothesis; there are significant differences among the three treatments.