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Chapter 11_1_15

Chapter 11_1_15 - t-Test Paired Two Sample for Means 38 52...

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Unformatted text preview: t-Test: Paired Two Sample for Means 38 52 Mean 56.71 60.57 Variance 136.9 78.29 Observations 7 7 Pearson Correlation .9 0 Hypothesized Mean Difference 0 df 6 t Stat -1.92 P(T<=t) one-tail 0.05 t Critical one-tail 1.94 P(T<=t) two-tail 0.1 t Critical two-tail 2.45 Box-and-whisker Plot 3 2 1 3 2 1 30 40 50 60 70 80 Date Initial Depth Depth 5 years later 5/11/02 38 52 6/7/02 58 60 6/24/02 65 72 7/8/02 74 72 7/27/02 56 54 8/31/02 36 48 9/30/02 56 58 10/12/02 52 60 ...
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