A survey of 1,026 people asked: What would you do with an unexpected tax refund? Forty-seven percent

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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).

a. At 95% confidence, what is the 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. P-69

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