SOLUTION: in a large city, a random survey found that 18% of the city's population want a new runway built at the city's airport. the survey had a margin of error of 5%. about how many peopl

Algebra ->  Probability-and-statistics -> SOLUTION: in a large city, a random survey found that 18% of the city's population want a new runway built at the city's airport. the survey had a margin of error of 5%. about how many peopl      Log On


   

Question 875204: in a large city, a random survey found that 18% of the city's population want a new runway built at the city's airport. the survey had a margin of error of 5%. about how many people were surveyed
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
.05 = 1.96sqrt%28%28.18%2A.82%29%2Fn%29
(.05/1.96)^2 = (.18*.82)/n
n = (.18*.82)(1.96/.05)^2 = 227 Rounded UP