Math Problem Statement
Question content area top Part 1 A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Before treatment, 1818 subjects had a mean wake time of 103.0103.0 min. After treatment, the 1818 subjects had a mean wake time of 81.381.3 min and a standard deviation of 21.621.6 min. Assume that the 1818 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 drug treatments. What does the result suggest about the mean wake time of 103.0103.0 min before the treatment? Does the drug appear to be effective? Question content area bottom Part 1 Construct the 9595% confidence interval estimate of the mean wake time for a population with the treatment. enter your response here minless than<muμless than<enter your response here min (Round to one decimal place as needed.)
Solution
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Math Problem Analysis
Mathematical Concepts
Confidence Intervals
Statistical Inference
Hypothesis Testing
Formulas
E = t_alpha/2 * (s / sqrt(n))
Confidence Interval: x̄ - E < μ < x̄ + E
Theorems
Central Limit Theorem
t-Distribution
Suitable Grade Level
Undergraduate Statistics
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