In a survey of 400 adults that say traffic is a problem: East reported 36% is a problem, South 33% problem, Midwest 26% problem and West 55% problem.

(a) The 95% confidence interval for the proportion from the West say traffic is problem is ( , ) Round 3 decimal places if needed.

(b) The 95% confidence interval for the proportion from the East say traffic is problem is ( , ) Round 3 decimal places if needed.