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 104.0 min. After treatment, the 13 subjects had a mean wake time of 82.1
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 104.0 min. After treatment, the 13 subjects had a mean wake time of 82.1
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
Related questions
Question
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
104.0
min. After treatment, the
13
subjects had a mean wake time of
82.1
min and a standard deviation of
23.6
min. Assume that the
13
sample values appear to be from a
90%
confidence
104.0
min before the treatment? Does the drug appear to be effective?
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