A national air traffic control system handled an average of
47, 359 flights during 29 randomly selected days in a recent year. The standard deviation for this sample is 6, 341
flights per day. Complete parts a through c below.
a. Construct a 99% confidence interval to estimate the average number of flights per day handled by the system.
The 99% confidence interval to estimate the average number of flights per day handled by the system is from a lower limit of
to an upper limit of
(Round to the nearest whole numbers.)
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