# Hw10Sol.pdf - Introductory Biostatistics I Homework 10 1 A...

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Introductory Biostatistics I Homework 1 0 1 . A total of 800 subjects were recruited into a clinical trial designed to test the efficacy of a new vaccine for the treatment of influenza. Half the subjects were assigned to the vaccine treatment, while the remaining half were assigned to the placebo. The following contingency table gives the frequencies of subjects who had flu, and those that did not have flu within one year of treatment: Response Treatment No Flu Flu Vaccine 202 198 Placebo 179 221 a . For each treatment: i . Estimate the population proportion of subjects catching the flu.
ii . Compute the standard error of the estimated population proportions.