Concept explainers
(a)
Find the 95% confidence interval for the percent of people who may get relief from this kind of joint pain by using medication A.
Interpret the result.
(b)
Find the 95% confidence interval for the percent of people who may get relief from this kind of joint pain by using medication B.
Interpret the result.
(c)
Find whether the two confidence intervals overlap or not.
Explain the meaning of comparative effectiveness of the medications.
(d)
Find the 95% confidence interval for the difference in the proportions of people who may find these medications effective.
Interpret the result.
(e)
Find whether the interval contains zero or not and state the meaning.
(f)
Explain the reason of contradictory answer of part c and e.
Find the correct approach for comparing the two methods.
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