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 97.5 min and a standard deviation of 44.7 min. Assume that the 22 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. Does the result indicate whether the treatment is effective?
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: n = 22x¯ = 77.9s = 24.690% confidence interval for μ. claim : μ ≠ 100
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
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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 for treating insomnia in older…
A: It is given that sample mean is 72.3 min and standard deviation is 21.2 min.
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 for treating insomnia in older…
A: Obtain the 90% confidence interval estimate of the mean wake time for a population with 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: 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: Given data for the after treatment, The formula of constructing the confidence interval about the…
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: It is given that a clinical trial was conducted to test the effectiveness of a drug for treating…
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A:
Q: A clinical trial was conducted to test the effectiveness of a drug 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: 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: From the provided information, Sample size (n) = 29 Sample mean (x̅) = 93.7 min Sample standard…
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 in older…
A: Since population standard deviation is unknown, Use t-distribution to find t-critical value. Find…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given: We have Sample Size (n)=20 Sample Mean (X¯)=91.3 Sample Standard Deviation (s) =40.5 90%…
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 in older…
A: The sample size is 15, sample mean is 95.5, and sample standard deviation is 21.8.
Q: drug for treating insomnia in older subjects. Before treatment, 13 subjects had a mean wake time of…
A: Given Xbar=95.3 Standard deviation=23.2
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…
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Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
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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 for treating insomnia in older…
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Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: Given information: x¯Before=101.0x¯After=91.2sAfter=23.5n=18Confidence level=99%
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: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: given data with drug treatment n = 24 x¯ = 80.4s = 23.990% ci for mean
Q: Find the confidence interval estimate. min <a<min (Round to two decimal places as needed.)
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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 in older…
A: From the given information, Sample size n =24 Sample mean, x̅=100.3. Sample standard deviation,…
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 for treating insomnia in older…
A: The confidence interval is used to estimate the range of interval within which the true parameter…
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 for treating insomnia in older…
A: Given data: Sample size(n) = 25 Mean = 82.1 Standard deviation = 24.6 To construct 95% confidence…
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: 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: 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: Obtain the 90% confidence interval estimate of the standard deviation of the wake times for a…
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: Given Mean=97.1 Standard deviations=21.3 Sample 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…
Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…
A: Since population standard deviation is unknown, Use t-distribution to find t-critical value. Find…
Q: A clinical trial was conducted to test the effectiveness of a drug used for treating insomnia in…
A: Given: Sample size(n)=15Standard deviation(s)=20.4Sample Mean(x¯)=95.7Population mean(μ)=100
min. Assume that the 22 sample values appear to be from a
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- A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 24 subjects had a mean wake time of 104.0 min. After treatment, the 24 subjects had a mean wake time of 98.2 min and a standard deviation of 23.3 min. Assume that the 24 sample values appear to be from a normally distributed population and construct a 95% confidence interval estimate of the 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 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.) Enter your answer in the edit fields and then click Check Answer. ? 1 part remaining Clear All Check AnswerA 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 for treating insomnia in older subjects. Before treatment, 25 subjects had a mean wake time of 100.0 min. After treatment, the 25 subjects had a mean wake time of 91.5 min and a standard deviation of 22.6 min. Assume that the 25 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 100.0 min before the treatment? Does the drug appear to be effective? Question content area bottom Part 1 Construct the 99% confidence interval estimate of the mean wake time for a population with the treatment. min<μ< min (Round to one decimal place as needed.)
- 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 for treating insomnia in older subjects. Before treatment, 20 subjects had a mean wake time of 101.0 min. After treatment, the 20 subjects had a mean wake time of 97.8 min and a standard deviation of 23.1 min. Assume that the 20 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 101.0 min before the treatment? Does the drug appear to be effective? Construct the 90% confidence interval estimate of the mean wake time for a population with the treatment. What does the result suggest about the mean wake time of 01.0min 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, 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, 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 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.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) 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 100.0 min. After treatment, the 16 subjects had a mean wake time of 75.9 min and a standard deviation of 20.3 min. Assume that the 16 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 100.0 min before the treatment? Does the drug appear to be effective? Construct the 90% confidence interval estimate of the mean wake time for a population with the treatment. min<μ< min (Round to one decimal place as needed.) What does the result suggest about the mean wake time of 100.0 min before the treatment? Does the drug appear to be effective? The confidence interval includes the mean wake time of 100.0 min before the treatment, so the means before and after…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 92.4 min and a standard deviation of 43.8 min. Assume that the 26 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. minRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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