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PLEASE JUST ANSWER (B) Suppose the annual incidence of asthma() among children 0-4years of age is 1.6% for boy in the general population. (a) If

PLEASE JUST ANSWER (B)

Suppose the annual incidence of asthma() among children 0-4years of age is 1.6% for boy in the general population.

(a) If 9 cases are observed over 1 year among 400 boys 0-4 years of age with smoking mothers, test whether there is a significant difference in asthma incidence between this group and the general population at =0.05.

(b) Let p be the proportion of asthma among children 0-4 years of age. Construct a 95% confidence interval for the p.

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