When this 3 digit number is rounded to the nearest hundred it rounds to 900 the digit in the ones place is the fifth odd number you count beginning with one the sum of the digits is 22 what is the number

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?