Question 10 Page 184 The following table shows the percentage of on-time arrival
ID: 3273770 • Letter: Q
Question
Question 10 Page 184
The following table shows the percentage of on-time arrivals, the number of mishandled bags per 1000 passengers and the number of customer complaints per 1000 passengers for 10 airlines.
Airline On-time arrivals Mishandled baggage Customer complaints
Virgin Airlines 83.5 0.87 1.50
JetBlue 79.1 1.88 .79
AirTran Airways 87.1 1.58 0.91
Delta Airlines 86.5 2.10 0.73
Alaska Airlines 87.5 2.93 0.51
Frontier Airlines 77.9 2.22 1.05
Southwest Airlines 83.1 3.08 0.25
US Airways 85.9 2.14 1.74
American Airlines 76.9 2.92 1.80
United Airlines 77.4 3.87 4.24
If you randomly chose a Delta Airlines flight, what is the probability that this individual flight has an on-time arrival?
If you randomly chose one of the ten airlines for a to follow up study on airline quality ratings, what is the probability that you will choose an airline with less than two mishandled bags per 1000 customers?
If you choose one of the ten airlines for a to follow up study on airline quality ratings, what is the probability that you will choose an airline with more than one customer complaint per 1000 customers?
What is the probability that a randomly selected AirTran Airways flight will not arrive on time?
Explanation / Answer
a) from given table probability that Delta Airline flight has an on time arrival =0.865
b)as there are 3 airlines listed in top where case of mishandled bags are less then 2 ; therefore
probability that airline has less then 2 mishandled bags per 1000 customers =3/10 =0.3
c)as there are 5 airlines with more then 1 customer complaint per 1000 customers;
therefore probability =5/10 =0.5
d)probability that Air Tran Airways flight will not arrive on time =1-probability it will be on time =1-0.871=0.129
please revert for any clarification required.
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