1.

To commute to his office, Mr. Brown can take either the A train or B train. Both train stations are the same distance from his apartment, and both stations claim that on average they run 10 minutes late from the scheduled arrival time . The standard deviation for the A train is 1 minute and for the B train is 5 minutes . Which of the following is a valid conclusion for Mr. Brown ?

Answer»

If he REGULARLY takes the A TRAIN, he will arrive at approximately the same time EVERY day .
if he takes the A train , he is less likely to arrive late
If he takes the A train,he is more likely to be 15 minutes late than with the B train.
If he takes theA train , he is more likely to arrive on time.

Answer :A


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