Harvey_Module 6_Tutorial

Harvey_Module 6_Tutorial - Melatonin 21 18 14 20 11 19 8 12...

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Unformatted text preview: Melatonin 21 18 14 20 11 19 8 12 13 15 Placebo 12 14 10 8 16 5 3 9 11 ple Assuming Equal Variances Melatonin Placebo Mean 15.1 9.777778 Variance 18.3222222 16.94444 Observations 10 9 Pooled Variance 17.6738562 Hypothesized Mean Difference 0 df 17 t Stat 2.75531845 P(T<=t) one-tail 0.00675822 t Critical one-tail 1.73960673 P(T<=t) two-tail 0.01351643 t Critical two-tail 2.10981558 t-Test: Two-Sample Assuming Unequal Variances Bran Regular Mean 35.5 77 Variance 60.33333 703.4286 Observations 4 8 Hypothesized Mean0 Difference df 9 t Stat -4.08888 P(T<=t) one-tail 0.001361 t Critical one-tail 1.833113 P(T<=t) two-tail 0.002722 t Critical two-tail 2.262157 Bran 32 38 27 45 Regular 118 78 82 91 67 41 97 42 Before 84 76 104 103 91 90 After 72 70 90 94 93 90 d Two Sample for Means Before After Mean 91.3333333 84.83333 Variance 117.466667 117.7667 Observations 6 6 Pearson Correlation 0.82358009 Hypothesized Mean Difference 0 df 5 t Stat 2.47152458 P(T<=t) one-tail 0.02821228 t Critical one-tail 2.01504837 P(T<=t) two-tail 0.05642456 t Critical two-tail 2.57058184 z-Test: Two Sample for Means Boys Girls Mean 42.33333 40.77778 Known Variance 256 324 Observations 9 9 Hypothesized Mean0 Difference z 0.193773 P(Z<=z) one-tail 0.423177 z Critical one-tail 1.644854 P(Z<=z) two-tail 0.846354 z Critical two-tail 1.959964 Boys 45 34 51 46 51 31 48 25 50 Girls 51 36 24 43 37 39 52 37 48 ...
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This note was uploaded on 01/19/2012 for the course IS 281 taught by Professor Partebo during the Fall '10 term at Eastern New Mexico.

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