A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 17 subjects had a mean wake time of 98.7 min and a standard deviation of 42.8 min. Assume that the 17 sample values appear to be from a normally distributed population and construct a 98% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the treatment is effective? Find the confidence interval estimate. min

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 17 subjects had a mean wake time of 98.7 min and a standard deviation of 42.8 min. Assume that the 17
sample values appear to be from a normally distributed population and construct a 98% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the
treatment is effective?
Find the confidence interval estimate.
min <a< min
(Round to two decimal places as needed.)
Does the result indicate whether the treatment is effective?
O A. Yes, the confidence interval indicates that the treatment is not effective because the interval contains 0 minutes.
O B. No, the confidence interval does not indicate whether the treatment
effective.
O C. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 98.7 minutes.
O D. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 0 minutes.
O E. Yes, the confidence interval indicates that the treatment is effective because the interval contains 0 minutes.
O F. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 0 minutes.
O G. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 98.7 minutes.
Transcribed Image Text:A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 17 subjects had a mean wake time of 98.7 min and a standard deviation of 42.8 min. Assume that the 17 sample values appear to be from a normally distributed population and construct a 98% confidence interval estimate of the standard deviation of the wake times for a population with the drug treatments. Does the result indicate whether the treatment is effective? Find the confidence interval estimate. min <a< min (Round to two decimal places as needed.) Does the result indicate whether the treatment is effective? O A. Yes, the confidence interval indicates that the treatment is not effective because the interval contains 0 minutes. O B. No, the confidence interval does not indicate whether the treatment effective. O C. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 98.7 minutes. O D. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 0 minutes. O E. Yes, the confidence interval indicates that the treatment is effective because the interval contains 0 minutes. O F. Yes, the confidence interval indicates that the treatment is not effective because the interval does not contain 0 minutes. O G. Yes, the confidence interval indicates that the treatment is effective because the interval does not contain 98.7 minutes.
Expert Solution
steps

Step by step

Solved in 2 steps with 3 images

Blurred answer
Knowledge Booster
Point Estimation, Limit Theorems, Approximations, and Bounds
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman