A clinical trial is conducted to compare an experimental medication to placebo to reduce the symptoms of asthma
3. A clinical trial is conducted to compare an experimental medication to placebo to reduce the symptoms of asthma. Two hundred participants are enrolled in the study and randomized to receive either the experimental medication or placebo. The primary outcome is self-reported reduction of symptoms. The data are recorded as follows.
Change in Symptoms
Treatment Much Worse Worse No change Better Much Better
Experimental 10 17 35 28 10
Placebo 12 25 42 12 9
Is there a difference in change in symptoms by treatment group? Run the appropriate test at a 5% level of significance.
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