Question: 2.30 Frequent-flyer programs are customer loyalty programs used by many passenger airlines.The following table shows the number of award trips offered to 60 passengers during

2.30 Frequent-flyer programs are customer loyalty programs used by many passenger airlines.The following table shows the number of award trips offered to 60 passengers during the last year.

Number of Award Trips 0 1 2 3 4 5 Number of Passengers 21 12 8 9 6 4

a. Find the mean number of the award trips offered to the passengers over the last year.

b. Find the sample variance and standard deviations.

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