t-test hmwk set 1

t-test hmwk set 1 - minutes, and subjects given drug B had...

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Total Minutes to Blood Clot Subjects given Drug A Subjects given Drug B Kate Stonesifer 8.8 9.9 Friday Lab 8.4 9 7.9 11.1 8.7 9.6 9.1 8.7 9.6 10.4 9.5 t-Test: Two-Sample Assuming Equal Variances Variable 1 Variable 2 Mean 8.75 9.74 Variance 0.34 0.67 Observations 6 7 Pooled Variance 0.52 Hypothesized Mean Difference 0 df 11 t Stat -2.48 P(T<=t) one-tail 0.02 t Critical one-tail 1.8 P(T<=t) two-tail 0.03 t Critical two-tail 2.2 Subjects given drug A had a mean clotting time of 8.75
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Unformatted text preview: minutes, and subjects given drug B had a mean clot time of about 9.74 minutes. The difference in the means are statistically signifigant (P&lt;0.05). There is an exact probability that the difference is due to sample error alone is 0.030764899. Therefore, we can conclude that subjects given drug A have a faster clotting time then subjects given drug B....
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