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Estimate for the proportion of americans

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When do Americans decide what to make for dinner? An outline survey indicated that 74% of Americans decided either at the last minute or that day. Suppose that the survey was based on 500 respondents.

(a) Construct a 95% confidence interval estimate for the proportion of Americans who decided what to make for dinner either at the last minute or that day.

(b) Construct a 99% confidence interval estimate of the proportion of Americans who decided what to make for dinner either at the last minute or that day.

(c) Which interval is wider? Explain why this is true.

Reference no: EM13245633

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