Questions 13 – 16 refer to the following: The ages of a sample of eight commercial...

Questions 13 – 16 refer to the following:

The ages of a sample of eight commercial planes which an airline uses at O’Hare Field are:

15, 18, 22, 3, 15, 21, 12, 14

14. If one of the planes from the sample is selected at random, what is the probability that its age will be less than the mode?

15. The shift changes after 5 more of these planes listed depart. How many different departure orderings are possible among these planes before the shift changes?

16.The average cost to service a plane yearly is equal to $5,000*T + $60,000, where T is the age of the plane. What is the average cost per year to service a plane in this fleet?

ALL STEPS AND FORMULAS USED PLEASE

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orchestra answered 1 year ago

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