In question 73, assume that 45 % of the entire population of voters support issuance of the new bonds. Under this condition, if the pollsters want to stay within 2%error (plus and minus 1 %), how many voters should they interview?

Question 73

A poll is conducted to predict whether new municipal bonds should be issued.
Assume that 230 out of 500 interviewees voted for issuance of the new bonds.
How precise is this prediction? Construct a 95 % confidence interval for the proportion of yes votes.