Although delays at major airports are now less frequent, ithelps to know which airports are likely to throw off your scheduleIn addition, if your plane is late arriving at a particular airportwhere you must make a connection, how likely is it that thedeparture will be late and thus increase your chances of making theconnection? The following data show the percentage of late arrivalsand departures during August for 13 airports (Business2.0, February 2002).
| Airport |
Late arrivals% |
Late departures % |
| A |
24 |
22 |
| b |
20 |
20 |
| c |
30 |
29 |
| d |
20 |
19 |
| e |
20 |
22 |
| f |
23 |
23 |
| g |
18 |
19 |
| h |
21 |
18 |
| i |
25 |
11 |
| j |
18 |
17 |
| k |
16 |
16 |
- Compute b1 and b0 (to 3decimals).
- A one percent increase in the percentage of late arrivals will increase the percentage of late departures by (to 3 decimals)
- Suppose the percentage of late arrivals at the Philadelphiaairport for August was 22%. What is an estimate of the percentageof late departures (to 2 decimals)?
- What does the scatter diagram developed using the data indicate about the relationship between late arrivals and late departures? postive or negative?