Question: Below is the table From Exercise 2 showing the number

Below is the table From Exercise 2 showing the number of fights at US airports that were delayed on the tarmac for more than three hours before departure during a recent 12-month period
Month Delayed Flights
March........ 85
April........ 74
May........ 34
June........ 268
July........ 161
August..... 66
September.... 6
October..... 11
November.... 4
December.... 34
January.... 20
February.... 60
a. Show the box plot and use the “1.5 x inter-quartile range” approach to identify any outliers.
b. Use the “3-standard-deviation” approach to identify any outliers. (The standard deviation of the delay data is 73.5 fights.)
c. Calculate the z-score or the value 268.

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  • CreatedJuly 16, 2015
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