Question: 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

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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