Question
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Beforetreatment, 21 subjects had a mean wake
A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older subjects. Beforetreatment, 21 subjects had a mean wake time of 103.0 min. Aftertreatment, the 21 subjects had a mean wake time of 99.7 min and a standard deviation of 22.9 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 drug treatments. What does the result suggest about the mean wake time of 103.0 min before thetreatment? Does the drug appear to beeffective?
Construct the 90% confidence interval estimate of the mean wake time for a population with the treatment.
nothing
min<<
nothing
min
(Round to one decimal place asneeded.)
What does the result suggest about the mean wake time of 103.0 min before thetreatment? Does the drug appear to beeffective?
The confidence interval
does not include
includes
the mean wake time of 103.0 min before thetreatment, so the means before and after the treatment
could be the same.
are different.
This result suggests that the drug treatment
does not have
has
a significant effect.
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started