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One flight daily to a certain destination. The following information shows the probability distribution of late arrivals for that flight in the past month:
Number of hours late Number of days it occurred
0 to <3 hours 8
3 to <6 hours 11
6 to <9 hours 6
9 to <12 hours 4
12 to <15 hours 1
What is the probability that the flight will be at least 3 hours late?
A. 0.73
B. 0.37
C. 0.22
D. 0.27
What is the average number of hours that a flight is late?
A. 7.8 hours
B. 3.33 hours
C. 9 hours
D. 5.4 hours
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