ES 462 HW 3

# ES 462 HW 3 - 1 Two-Sample T-Test and CI Area A Area B...

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1.) Two-Sample T-Test and CI: Area A, Area B Two-sample T for Area A vs Area B N Mean StDev SE Mean Area A 4 1.125 0.222 0.11 Area B 5 0.640 0.230 0.10 Difference = mu (Area A) - mu (Area B) Estimate for difference: 0.485 90% CI for difference: (0.191, 0.779) T-Test of difference = 0 (vs not =): T-Value = 3.21 P-Value = 0.018 DF = 6 Area B Area A 1.50 1.25 1.00 0.75 0.50 Data I ndividual Value Plot of Area A, Area B Area B Area A 1.50 1.25 1.00 0.75 0.50 Boxplot of Area A, Area B

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2.) a.) Two-Sample T-Test and CI Sample N Mean StDev SE Mean 1 4 1.200 0.330 0.17 2 6 1.800 0.120 0.049 Difference = mu (1) - mu (2) Estimate for difference: -0.600 95% CI for difference: (-1.148, -0.052) T-Test of difference = 0 (vs not =): T-Value = -3.49 P-Value = 0.040 DF = 3 b.) Area 1 One-Sample T N Mean StDev SE Mean 90% CI 4 1.200 0.330 0.165 (0.812, 1.588) Area 2 One-Sample T N Mean StDev SE Mean 90% CI 6 1.8000 0.1200 0.0490 (1.7013, 1.8987) Two-Sample T-Test and CI Sample N Mean
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ES 462 HW 3 - 1 Two-Sample T-Test and CI Area A Area B...

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