1. Use Statistix to compare the mean sizes/mileages for levels 1 and 2 of your qualitative...

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1. Use Statistix to compare the mean sizes/mileages for levels 1 and 2 of your qualitative variable. In Statistix, you will need to omit all level 3 observations in your data set to create this printout. Conduct the printout for a two-tailed test in Statistix. Attach the printout here and answer the following questions. Two-Sample T Tests for mileage by model model N 1 25 Mean 39000 2 25 Difference 47240 -8240.0 SD 28361 5672.2 26743 5348.6 27564 7796.2 SE T-Tests for Mean Difference Null Hypothesis: difference = 0 Alternative Hyp: difference # 0 Lower Upper Method Pooled Satterthwaite Variances Equal Unequal DF T P 95% C.I. 95% C.I. 48 47.8 -1.06 -1.06 0.2958 0.2959 -23915 -23917 7435.3 7436.7 Homogeneity of Variances Folded F Test (two-sided) DF 24,24 F 1.12 P 0.7759 Cases Included 50 Missing Cases 0 a. Which row on the printout, equal or unequal variances, would be the correct row to use to compare the two population means? (2 points) b. State the rejection region you would use if you wanted to conduct a two-tailed test. You choose alpha. (2 points) (Assume for this problem that you are working with 50 degrees of freedom - I know you are not, but that is the row I want you to use in the table). Use the confidence interval on the printout to make an inference about which of the two populations means is larger (in the words of the problem). Make sure to state your measure of reliability. (2 points) 1. Use Statistix to compare the mean sizes/mileages for levels 1 and 2 of your qualitative variable. In Statistix, you will need to omit all level 3 observations in your data set to create this printout. Conduct the printout for a two-tailed test in Statistix. Attach the printout here and answer the following questions. Two-Sample T Tests for mileage by model model N 1 25 Mean 39000 2 25 Difference 47240 -8240.0 SD 28361 5672.2 26743 5348.6 27564 7796.2 SE T-Tests for Mean Difference Null Hypothesis: difference = 0 Alternative Hyp: difference # 0 Lower Upper Method Pooled Satterthwaite Variances Equal Unequal DF T P 95% C.I. 95% C.I. 48 47.8 -1.06 -1.06 0.2958 0.2959 -23915 -23917 7435.3 7436.7 Homogeneity of Variances Folded F Test (two-sided) DF 24,24 F 1.12 P 0.7759 Cases Included 50 Missing Cases 0 a. Which row on the printout, equal or unequal variances, would be the correct row to use to compare the two population means? (2 points) b. State the rejection region you would use if you wanted to conduct a two-tailed test. You choose alpha. (2 points) (Assume for this problem that you are working with 50 degrees of freedom - I know you are not, but that is the row I want you to use in the table). Use the confidence interval on the printout to make an inference about which of the two populations means is larger (in the words of the problem). Make sure to state your measure of reliability. (2 points)