Answered: A clinical trial was conducted to test…

Name: A clinical trial was conducted to test the effectiveness of the drug z
Uploaded: 2024-03-20T07:07:12.000Z
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Description: A clinical trial was conducted to test the effectiveness of the drug zopiclone for testing insomnia in older subjects. Before treatment with zopiclone, the 16 subjects had a mean wake up time of 102.8 min. After treatment with zopiclone, 16 subjects

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A clinical trial was conducted to test the effectiveness of the drug zopiclone for testing insomnia in older subjects. Before treatment with zopiclone, the 16 subjects had a mean wake up time of 102.8 min. After treatment with zopiclone, 16 subjects had a mean wake up time of 98.9 min and a standard deviation of 42.3 min. Assume that the 16 sample values appear to be from a normally distributed population, and test the claim that after treatment with zopiclone, subjects had a mean wake up time of less than 102.8 min. Use a 0.01 significance level.

a) State the null and alternative hypotheses.

b) Show calculations and state whether the null hypothesis is rejected.

c) State conclusion addressing the original claim

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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