(Answered) 1 in a survey of 4013 adults 722 say they have seen a ghost

Statistics

1) In a survey of 4013 adults, 722 say they have seen a ghost. Construct a 90% confidence interval for the proportion of people who say they have seen a ghost.

Show your value for E and your confidence interval

2) You are running a political campaign and wish to estimate, with 95% confidence, the proportion of registered voters who will vote for your candidate. Your estimate must be within 3% of the true population. Find the minimum sample size if a preliminary estimate tells you that 31% of the voters will vote for your candidate.

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