Please help me answer these questions..

A graduate student is trying to determine the burnout levels (measured by a survey) of high school counselors who work in rural schools versus those who work in urban schools. The graduate student hypothesizes that urban school counselors will have higher burnout levels. The student will be using a O one-tailed (one-sided) significance test O two-tailed significance testA school that was on the verge of state-takeover gets new leadership. The new principal is interested in knowing how his leadership has changed perceptions of school climate (measured by a teacher survey). The principal collected data at the beginning of the school and again at the end of the year. To determine the effect of new leadership on school climate, the principal will use 0 a one-sample Host 0 a dependent t-test 0 an independent t-test 0 an ANOVA A student is trying to determine if there is a signicant difference in vocabulary scores between preschoolers who watch 3 hours per week of the cartoon Martha Speaks (treatment) and those who don't watch this cartoon (control). An example of a directional hypothesis in this study is Q There is no signicant difference in vocabulary scores between treatment and control groups. 0 Students who watch Martha Speaks will have higher vocabulary scores than those in the control group. Q There will be no signicant difference in vocabulary scores between the treatment and control groups. 0 Children who attend preschool will watch more hours of Martha Speaks per week than children not attending preschool. George conducted a dependent t-test. In this analysis, the critical region is t 2 1.78. After calculating the t-statistic (t=2.33), George concludes that O The null hypothesis must be rejected. O The null hypothesis must be retained.In a paired (dependent) t-test 0 Scores from 2 different groups are compared 0 Subjects in one group are tested twice. Miss Robinson wants to determine if there was a statistical difference between student's math pretest and posttest scores. She would need to use O a one-sample t-test O two sets of one-sample t-tests O a dependent-t test O an independent t-testResearchers at CSUF are interested in determining the effect of Restorative Justice (RJ) programs on student suspensions in the Central Valley. They will be comparing the number of student suspensions between those who received RJ education and those who didn't. An appropriate analysis to run would be O a frequency distribution for each group O a dependent t-test O a one-sample t-test O an idependent t-testSara conducted an independent t-test. In this analysis, the critical region is t 2 2.120. After calculating the t-statistic (t=1.98), Sara concludes that O The null hypothesis must be rejected. O The null hypothesis must be retained.The principal of St.Olaf High knows that her leadership has had an effect on teacher morale but is unsure about whether the effect has been positve or negative after 1 year of being at the school. The alternative hypothesis in this case would be 0 nondirectional Q directional When using a t-test and your alternative hypothesis is directional, you will interpret results for a O one-tailed (one-sided) significance test O two-tailed significance test