Question

You are interested in the effects of witnessing sexual victimization in prison on trauma symptoms. You asked prisoners if they have ever witnessed another prisoner be sexually assaulted (measured no/yes). You also administer the Trauma Symptoms Checklist (TSC) scale, which has a maximum score of 90 (higher scores equal more trauma symptoms experienced). You hypothesize that prisoners who did not witness sexual victimization will have lower TSC score than prisoners who did witness sexual victimization. Below are the data that tests this hypothesis. (18 points total)

Group Statistics
	Witness sexual victimization	N	Mean	Std. Deviation	Std. Error Mean
TSC Scale	No	998	26.28	17.387	.550
	Yes	301	31.35	19.854	1.144

Independent Samples Test
		Levene's Test for Equality of Variances		t-test for Equality of Means
		F	Sig.	t	df	Sig. (2-tailed)	Mean Difference	Std. Error Difference	95% Confidence Interval of the Difference
									Lower	Upper
TSC Scale	Equal variances assumed	13.105	.000	-4.292	1297	.000	-5.077	1.183	-7.397	-2.756
	Equal variances not assumed			-3.998	447.638	.000	-5.077	1.270	-7.572	-2.581

27: Symbolize the research and null hypotheses. Is this a one-tail or two-tail test?

28:How many total people are in the sample?

Answer 1