Calculation practice: Standard error of a proportion. Canner et al. (2014) surveyed U.S. emergency room data to better understand who is most likely to be injured by fireworks. Of the 25,675 admissions to emergency rooms for fireworks-related injuries, 19,613 were males and 6062 were females.

a. Identify the total sample size, n.^n.

b. Calculate the observed proportion of all firework injuries that were experienced by males. This is the best estimate of the population proportion, P.^P.

c. Calculate the standard error of p^ , using SE_p^=√p^(1−p^)/n.