Distribution Free Hypothesis Testing: Paired Sample Sign Test Example (A)

To measure the effectiveness of a drug for asthmatic relief, 12 subjects, all susceptible to asthma, were each administered the drug after one asthma attack and the placebo after a separate asthma attack. One hour after the attack an asthmatic index was obtained on each subject with the following results Subject  1  2  3  4   5  6  7  8  9  10  11  12 Drug 28  31  17  18  31  12  33  24  18  25   19  17 Placebo  32  33  23  26  34  17  30  24  19  23  21  24 Making no assumptions regarding the distribution of these data, investigate the claim that the drug significantly reduces the asthmatic index using a sign test at the 5% significance level Recorded with https://screencast-o-matic.com