In the set of consecutive integers from 8 to 25 inclusive, two integers are multiples of both 3 and 4. How many integers in this set are multiples of neither 3 nor 4?

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?