A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects.Before treatment, 22 subjects had a mean wake time of 101.0 min. After treatment, the 22 subjects had a mean waketime of 76.4 min and a standard deviation of 21.3 min. Assume that the 22 sample values appear to be from anormally distributed population and construct a 95% confidence interval estimate of the mean wake time for alpopulation with drug treatments. What does the result suggest about the mean wake time of 101.0 min beforethe treatment? Does the drug appear to be effective?HIPERCUMPMeConstruct the 95% confidence interval estimate of the mean wake time for a population with the treatment.min <μ< min(Round to one decimal place as needed.)

The sample size is 22, the sample mean is 76.4 and the sample standard deviation is 21.3.

Answered: A clinical trial was conducted to test…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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