A clinical trial was conducted to test the effectiveness of adrug 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
92.4
min and a standard deviation of
21.1
min. Assume that the
20
sample values appear to be from a normally distributedpopulation and construct a
99%
confidence interval estimate of the mean wake time for apopulation with drug treatments. What does the result suggest aboutthe mean wake time of
101.0
min before the? treatment? Does the drug appear to be?effective?
Construct the
99%
confidence interval estimate of the mean wake time for apopulation with the treatment.
_ min < u < min
The confidence interval
?
the mean wake time of
101.0
min before the? treatment, so the means before and after thetreatment
?
This result suggests that the drug treatment
?
a significant effect.
First blank: DOES NOT INCLUDE or INCLUDE
Second blank: ARE DIFFERENT or COULD BE THE SAME
Third Blank: HAS or DOES NOT HAVE
