The report ?Airline Quality Rating 2016? (airlinequalityrating.com/reports/2016_AQR_Final .pdf, retrieved April 25, 2017) provides an overview of the complaints about airlines received by the U.S. Department of Transportation. The table below gives the number of complaints received by type of complaint for the years 2014 and 2015.

Suppose that one of these complaints is randomly selected for a follow-up interview. Use the given information to estimate the probabilities on the next page.

a. The probability that a complaint made in 2014 was about baggage handling.

b. The probability that a complaint made in 2015 was not about flight problems.

c. The probability that two complaints made in 2015 were both about flight problems.

d. The probability that a complaint made in 2014 was either about flight problems or customer service.

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2014 Number 2015 Number Type of Complaint of Complaints of Complaints Received Received Flight problems 4,304 5,506 Baggage handling 1,628 2,050 Reservations, tick- eting, boarding 1,276 1,807 Customer service 1,201 1,728 Fares 699 1,300 Other 2,257 2,869