What is the next fraction in the following pattern? 5/1, 10/2, 9/2, 18/4, 17/8, 34/32, 33/256 . . . ?
SOMEONE PLEASE HELP

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?