A survey of 1,026 people asked: 'What would you do with an unexpected tax refund?' Forty-seven percent responded that they would pay off debts (Vanity Fair, June 2010). Use Table 1. a. At 95% confidence, what is the margin of error? (Round your intermediate calculations to 4 decimal places, "z" value to 2 decimal places, and final answer to 3 decimal places.) Margin of error b. Construct a 95% confidence interval of the population proportion of people who would pay off debts with an unexpected tax refund. (Use rounded margin of error. Round your answers to 3 decimal places.) Confidence interval to