Interpret this interval for a traveler planning to fly

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Reference no: EM131381367

Departures 2009. What are the chances your flight will leave on time? The U.S. Bureau of Transportation Statistics of the Department of Transportation publishes information about airline performance. Here are a histogram and summary statistics for the percentage of flights departing on time each month from 1995 thru March 2009. (https://www.transtats.bts.gov/HomeDrillChart.asp)

There is no evidence of a trend over time.

a) Check the assumptions and conditions for inference.

b) Find a 90% confidence interval for the true percentage of flights that depart on time.

c) Interpret this interval for a traveler planning to fly.

Reference no: EM131381367

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