Question
In: Statistics and Probability
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
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 100.0 min. After treatment, the13 subjects had a mean wake time of 93.5 min and a standard deviation of 20.7 min. Assume that the13 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 100.0 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.
Solutions
orchestra answered 2 years agoRelated Solutions
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. Before treatment, 18
subjects had a mean wake time of 103.0 min. After treatment, the
18 subjects had a mean wake time of 78.4 min and a standard
deviation of 20.7 min. Assume that the 18 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...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. Before treatment, 15
subjects had a mean wake time of 105.0 min. After treatment, the
15 subjects had a mean wake time of 99.7 min and a standard
deviation of 24.3 min. Assume that the 15 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...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. Before treatment,23
subjects had a mean wake time of 104.0 min. After treatment, the
23 subjects had a mean wake time of 79.5 min and a standard
deviation of 23.92 min. Assume that the 23 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...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. Before
treatment,
2323
subjects had a mean wake time of
100.0100.0
min. After treatment, the
2323
subjects had a mean wake time of
74.674.6
min and a standard deviation of
20.920.9
min. Assume that the
2323
sample values appear to be from a normally distributed
population and construct a
9999%
confidence interval estimate of the mean wake time for a
population with...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. Before treatment, 19
subjects had a mean wake time of 103.0 min. After treatment, the
19 subjects had a mean wake time of 76.3 min and a standard
deviation of 23.4 min. Assume that the 19 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...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. Before
treatment,
2121
subjects had a mean wake time of
102.0102.0
min. After treatment, the
2121
subjects had a mean wake time of
95.695.6
min and a standard deviation of
20.120.1
min. Assume that the
2121
sample values appear to be from a normally distributed
population and construct a
9595%
confidence interval estimate of the mean wake time for a
population with...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
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
96.7
min and a standard deviation of
21.8
min. Assume that the
25
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...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. Before treatment, 21
subjects had a mean wake time of 104.0 min. After treatment, the
21 subjects had a mean wake time of 99.9 min and a standard
deviation of 24.5 min. Assume that the 21 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...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
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
97.9
min and a standard deviation of
21.8
min. Assume that the
13
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...
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in...
A clinical trial was conducted to test the effectiveness of a
drug for treating insomnia in older subjects. After treatment, the
20 subjects had a sample mean wake time of 93.8 minutes and a
sample standard deviation of 21.6 minutes. Assume that the sample
values appear to be from a normally distributed population.
Construct a 95% confidence interval estimate of the mean wake time
for a population with drug treatments.
a) Verify that the conditions are met.
Show your work....
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