Assume you measure an outcome in separate groups exposed to placebo or drug in a

Question

Assume you measure an outcome in separate groups exposed to placebo or drug in a set of experiments. In each experiment, you expose 225 patients to placebo and 300 patients to drug. For your tests, you construct the difference population from drug-placebo.

With a placebo mean of 56.586 with standard deviation of 20.001 and a drug mean of 59.786 with standard deviation of 12.015 what are the lower _____ and upper _____ bounds on the 95% confidence interval, and the P-value ______ . Does the P value indicate a significant difference at alpha = 0.05? _____

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Explanation / Answer

Assume you measure an outcome in separate groups exposed to placebo or drug in a set of experiments. In each experiment, you expose 225 patients to placebo and 300 patients to drug. For your tests, you construct the difference population from drug-placebo.

With a placebo mean of 56.586 with standard deviation of 20.001 and a drug mean of 59.786 with standard deviation of 12.015 what are the lower __92%___ and upper __55%___ bounds on the 95% confidence interval, and the P-value _43%_____ . Does the P value indicate a significant difference at alpha = 0.05? ___10%_

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