A bus operates between Miami International Airport and Miami Beach, 10 miles away. It makes 20 round trips per
day carrying 32 passengers per trip. If the fare each way
is $11.00, how much money is taken in from one day's
operation?

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?