An advertisement by Schering Corporation for the allergy drug Claritin mentioned that in a pediatric randomized clinical trial, symptoms of nervousness were shown by 4 of 188 patients on Claritin and 2 of 262 patients taking placebo. Denote the population proportion who would show such symptoms by p1 for Claritin and by p2 for placebo. The computer printout shows results of significance tests for H0: p1 = p2.
a. Report the P-value for the small-sample test, with Ha: p1 ‰  p2. Interpret in the context of this study.
b. Is it appropriate to conduct the chi-squared test for these data? Why or why not?
Analyses of Claritin data

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Rows: treatment Columns: nervousness yes no 184 260 Claritin4 Placebo Statistic Pisher's Exact Test (2-Tail) 0.24 Chi-squared 1.55 P-Value 0.21