alternative hypotheses, this is a ____ test. To use the Distributions tool to find the critical region, you first need to set the degrees of freedom. The degrees of freedom is _ The critical t-scores (t_crit) that form the boundaries of the critical region for alpha = 0.05_2 tail are plusminus __ In order to calculate the t statistic (t_obt), you first need to estimate the unknown population variance. Since you are assuming the variance of the anxiety scores are the same among bullies and bully-victims, you can estimate the population variance by calculating the weighted sample variance (sh2_w). The weighted sample variance is __ . The t statistic (t_obt) is ____. The t statistic (t_obt) ___ in the critical region. Therefore, the null hypothesis is _____ . You ____ conclude that bullies have a different mean anxiety score than bully-victims. Thus, it can be said that these two means are different from one another