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Emma wants to estimate the percentage of people who use public transportation in a city. She surveys 140 individuals and finds that 62 use public

Emma wants to estimate the percentage of people who use public transportation in a city. She surveys 140 individuals and finds that 62 use public transportation.

Find the confidence interval for the population proportion with a 99% confidence level.

z0.10

z0.05

z0.025

z0.01

z0.005

1.282

1.645

1.960

2.326

2.576

Use the table of common z-scores above.

  • Round the final answer to three decimal places.

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