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there is 92 students in the class 25 get a grade in their sociology exam find out 95% of confidence interval for given data  write your answer in percentage in 2 decimal places and other answer in 4 decimal places  solve with details please

there is 92 students in the class 25 get a grade in their sociology exam find out 95% of confidence interval for given data  write your answer in percentage in 2 decimal places and other answer in 4 decimal places  solve with details please

MATLAB: An Introduction with Applications
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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there is 92 students in the class 25 get a grade in their sociology exam find out 95% of confidence interval for given data 

write your answer in percentage in 2 decimal places and other answer in 4 decimal places 

solve with details please 

 

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 13 subjects had a mean wake time of 103.0 min. After treatment, the 13 subjects had a mean wake time of 77.5 min and a standard deviation of 20.1 min. Assume that the 13 sample values appear to be from a normally distributed population and construct a 99% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 103.0 min before the treatment? Does the drug appear to be effective? Construct the 99% confidence interval estimate of the mean wake time for a population with the treatment. O min <u<min (Round to one decimal place as needed.) What does the result suggest about the mean wake time of 103.0 min before the treatment? Does the drug appear to be effective? The confidence interval the mean wake time of 103.0 min before the treatment, so the means before and after the treatment This result suggests that the drug treatment a significant effect.
Transcribed Image Text:A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 13 subjects had a mean wake time of 103.0 min. After treatment, the 13 subjects had a mean wake time of 77.5 min and a standard deviation of 20.1 min. Assume that the 13 sample values appear to be from a normally distributed population and construct a 99% confidence interval estimate of the mean wake time for a population with drug treatments. What does the result suggest about the mean wake time of 103.0 min before the treatment? Does the drug appear to be effective? Construct the 99% confidence interval estimate of the mean wake time for a population with the treatment. O min <u<min (Round to one decimal place as needed.) What does the result suggest about the mean wake time of 103.0 min before the treatment? Does the drug appear to be effective? The confidence interval the mean wake time of 103.0 min before the treatment, so the means before and after the treatment This result suggests that the drug treatment a significant effect.
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