d all W t in to determine if there is a difference between the average GPA of all Tattooed an e are N g at least one tattoo and the printout for Non-Tattooed students. Students were asked if they had this analysis is shown here. Hypothesis Test - Two Means N Mean 353 0 043% Tattoo 82 3.4141 0.4 6 . No Tattoo 15 3.3367 0.6489 0.1675 Difference 0.0774 0.4741 0.1331 TTests for Mean Difference Null Hypothesis: difference = 0 Alternative Hyp: difference a: 0 Lower Upp er Method Variances DF T P 95% C.I. 95% C. I. Pooled Equal 95 0.58 0.5623 ~0.1869 0.341 7 Satterthwaite Unequal 16.4 0.44 0.6629 0.2915 0.446 3 Homogeneity of Variances DF F P K' Folded F Test 14,81 2.21 0.1141 Before comparing means, we need to test the relationship of the population variances. What conclusion would you make if we tested to determine if the population variances differ at alpha = .10? Q There is sufcient evidence to indicate that the variation in the GPAs differs for the tattooed and the non- tattooed student populations. 0 There is insufcient evidence to indicate that the variation in the GPAs differs for the tattooed and the non- tattooed student populations. 0 There is sufcient evidence to indicate that the variation in the GPAs are equal for the tattooed and the non tattooed student populations