Question: The waiting time for a commuter bus is normally distributed with a mean of 8 minutes and a standard deviation of 2 minutes. If there

The waiting time for a commuter bus is normally distributed with a mean of 8 minutes and a standard deviation of 2 minutes. If there are 3,000 riders a day, which of the following is the shortest time interval associated with 2,000 riders?

a. 7.1 to 14 minutes

b. 0 to 8.9 minutes

c. 6.1 to 9.9 minutes

d. 6.1 to 8 minutes

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