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The average (arithmetic mean) number of passengers on a subway car is 60. If the...
Question 10
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The average (arithmetic mean) number of passengers on a subway car is 60. If the number of passengers on a car has a normal distribution with a standard deviation of 20, approximately what percent of subway cars carry more than 80 passengers?
A.16%
B.48%
C.68%
D.88%
E.98%
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