The table on page 156 lists the overall percentage of domestic flights of major U.S. airlines that arrived on time during June 1995.

a. One of these ten airlines is to be selected at random. What is the probability that Southwest is selected? That Continental is selected?

b. If one of Continental's domestic flights during June 1995 were randomly selected, what is the probability that the flight arrived on time?

Was late?

c. These data are reported each month by the airlines to the U.S. Department of Transportation.

Consequently, some experts question their accuracy. With this in mind, would you recommend that these percentages be treated as upper or lower boinds for the actual on-time percentages? Explain.