Louis wants to estimate the percentage of people in an airplane who are over the age of 65. He surveys 235 airplane passengers and finds that 15 are over the age of 65. Identify the values needed to...

Louis wants to estimate the percentage of people in an airplane who are over the age of 65. He surveys 235 airplane passengers and finds that 15 are over the age of 65.

Identify the values needed to calculate a confidence interval at the 95% confidence level. Then find the confidence interval.

Use the table of common z-scores above.

• If necessary, round the final answer to three decimal places.