A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 26 subjects had a mean wake time of 91.3 min and a standard deviation of 43.4 min. Assume that the 26 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? Question content area bottom Part 1 Find the confidence interval estimate.
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: Find the confidence interval estimate. enter your response here min<σ<enter your response here min…
A: It is given that Sample mean = 94.7Sample standard deviation = 44.2Confidence level = 95%Sample size…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given That The sample size is n=16 The sample mean is X=91.6 The sample standard deviation is s=40.1…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Obtain the 98% confidence interval estimate of the standard deviation of the mean wake times for a…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: The degrees of freedom is, df=n-1=23-1=22 The degrees of freedom is 22. Critical value for χU2 : The…
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: We have to find ci.
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: The sample size is 16, the sample mean is 97.8 and the sample standard deviation is 22.6.
Q: A clinical trial was conducted to test the effectiveness of the drug zopiclone for treating insomnia…
A: From the provided information, Sample size (n) = 16 Sample mean (x̄) = 78.9 Sample standard…
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A:
Q: Find the confidence interval estimate. min <o< min (Round to two decimal places as needed.)
A: Given : 23 subjects had a mean wake time at 95.5 minutes and a standard deviation of 44.7 minutes We…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given : Sample Size (n) = 26 standard deviation(s) = 40.7 The level of significance (L) =0.10…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given thatn =11, = 92.6 , S= 42.9,To find confidence interval formula is ---------------- (*)
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: Find the confidence interval estimate. enter your response here min<σ<enter your response here min…
A: Given sample size,n = 19 df=n-1= 18 sample standard deviation,s= 41.9…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: standard deviation of 42.9 min n = 17
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: Assume that µ is the true mean wake time for a population with the drug treatment.
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: We have given that Sample size n=16 , standard deviation s=44.1 98% C.I
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Introduction: The 100 (1 – α) % confidence interval for the population standard deviation, σ, is the…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given data,n=15x=91.8s=42.7α=0.10t-critical value at α=0.10 and df=14 is tc=1.761
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given n=29, s=44.6=sample standard deviations Level of significance ɑ=0.10
Q: Find the confidence interval estimate. min <a<min (Round to two decimal places as needed.)
A:
Q: clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: Sample size : n=25 Before treatment , Sample mean : x¯1=103 After treatment , Sample mean : x¯2=96.1…
Q: clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia.Before…
A: Obtain the 95% confidence interval estimate of the mean wake time for a population with drug…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Sample size, n=20 Sample standard deviation, s = 43.9
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given: Sample MeanX=93.8Sample Standard Deviations=44.8Sample Sizen=26
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: The sample standard deviation is given as 44.4 minutes. The sample size is 17. Hence, the degrees of…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given data : A clinical trial was conducted to test the effectiveness of a drug used for treating…
Q: clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older…
A: Given n=26, x̄=95.2, s=40.7 ɑ=0.02
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Assume that the 13 sample values appear to be from a normally distributed population.
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Find critical values for chi-square distribution: Refer chi-square table to find the critical…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Obtain the 90% confidence interval estimate of the standard deviation of the wake times for a…
Q: company manufactures a certain over-the-counter drug. The company samples 80 pills and finds that…
A: We have given that Sample size n = 80 Sample mean = 325.5 Standard deviation s=10.3 90%confidence…
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: Let μa denotes the true population mean for after treatment. Let xb¯ and xa¯ denote the sample mean…
Q: A clinic trial was conducted to test the effectiveness of drug for treating insomnia in older…
A: Sample size (n) = 25Sample mean (x̅) = 78.2Standard deviations (s) = 23.6Significance level (α ) =…
Q: Find the confidence interval estimate. 32.48 min << 72.17 min (Round to two decimal places as…
A: It is given that Mean = 97.7Standard deviation = 44.8Sample size = 14
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: A sample of 12 subjects had a mean wake time of 96.1 min and a standard deviation of 43.4 min. The…
Q: a clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: The objective of this question is to construct a 95% confidence interval for the standard deviation…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given that Sample size n = 21 Sample SD s = 43.5 We have to find the 90% confidence interval for…
A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 26 subjects had a mean wake time of 91.3 min and a standard deviation of 43.4 min. Assume that the 26 sample values appear to be from a
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images
- 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 105.0 min. After treatment, the 13 subjects had a mean wake time of 100.3 min and a standard deviation of 20.9 min. Assume that the 13 sample values appear to be from a normally distributed population and construct a 90% 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 105.0 min before the treatment? Does the drug appear to be effective? ur ewor om Construct the 90% confidence interval estimate of the mean wake time for a population with the treatment. s out Ex minA clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 16 subjects had a mean wake time of 103.0 min. After treatment, the 16 subjects had a mean wake time of 94.3 min and a standard deviation of 21.5 min. Assume that the 16 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.A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 22 subjects had a mean wake time of 92.6 min and a standard deviation of 41.5 min. Assume that the 22 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 estimateA clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 26 subjects had a mean wake time of 97.5 min and a standard deviation of 43.3 min. Assume that the 26 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?A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 24 subjects had a mean wake time of 90.7 min and a standard deviation of 41.3 min. Assume that the 24 sample values appear to be from a normally distributed population and construct a 95% 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 <σ<___ minA clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 16 subjects had a mean wake time of 92.6 min and a standard deviation of 40.2 min. Assume that the 16 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. minA clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 23 subjects had a mean wake time of 93.6 min and a standard deviation of 43.8 min. Assume that the 23 sample values appear to be from a normally distributed population and construct a 90% 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. minA clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 21 subjects had a mean wake time of 95.5 min and a standard deviation of 41.5 min. Assume that the 21 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. OminA clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 16 subjects had a mean wake time of 104.0 min. After treatment, the 16 subjects had a mean wake time of 78.7 min and a standard deviation of 21.2 min. Assume that the 16 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 104.0 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. nothing min<μ<nothing min (Round to one decimal place as needed.) What does the result suggest about the mean wake time of 104.0 min before the treatment? Does the drug appear to be effective? The confidence interval ▼ does not include includes the mean wake…A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 20 subjects had a mean wake time of 92.5 min and a standard deviation of 43.9 min. Assume that the 20 sample values appear to be from a normally distributed population and construct a 90% 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. minA clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 16 subjects had a mean wake time of 105.0 min. After treatment, the 16 subjects had a mean wake time of 95.3 min and a standard deviation of 23.5 min. Assume that the 16 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 105.0 min before the treatment? Does the drug appear to be effective?A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in older subjects. After treatment with the drug, 11 subjects had a mean wake time of 97.2 min and a standard deviation of 43.4 min. Assume that the 11 sample values appear to be from a normally distributed population and construct a 90% 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. (answer) min less then σ less than (answer) minSEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. FreemanMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman