A poll of 2,228 likely voters was conducted on the president's performance. Approximately what margin of error would the approval rating estimate have if the confidence level is 95%?(Round your answer to 4 decimal places.)

Margin of error

(b)The poll showed that 44 percent approved the president's performance. Construct a 90 percent confidence interval for the true proportion.(Round your answers to 4 decimal places.)

The 90% confidence intervalis fromto

(c)Would you agree that the percentage of all voters opposed is likely to be 50 percent?