In a poll to estimate presidential popularity, each person in a random sample of 1,500 voters was asked to agree with one of the following statements:
1)The president is doing a good job
2)The president is doing a poor job
3)I have no opinion
A total of 610 respondents selected the first statement , indicating they thought the president is doing a job (Round your answer to 2 decimal places)
confidence interval for the proportion is up to
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