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. Calculate the proportion of sampled airline flights that landed within 15 minutes of scheduled arrival.

_____________ (Round to three decimal places as needed.)

b. Calculate the probability that a sampled proportion of on-time flights would be within plus or minus0.05 of a population proportion equal to 0.737.

____________ (Round to four decimal places as needed.)

c. If the airlines’ goal was to attain the same proportion of on-time arrivals as the previous year, do the preliminary results indicate that they have met this goal? Support your assertions.

A. The sample proportion is outside the interval found in part b. There is a large chance that a sample proportion would be outside this interval given the population proportion is still 0.737.

B. The sample proportion is contained in the interval found in part b. There is a large chance that a sample proportion would be contained in this interval given the population proportion is still 0.737.

C. The sample proportion is contained in the interval found in part b. There is a small chance that a sample proportion would be contained in this interval given the population proportion is still 0.737.

D. The sample proportion is outside the interval found in part b. There is a small chance that a sample proportion would be outside this interval given the population proportion is still 0.737.