leila decides to save for 6 years. she opens a saving account with $800. the account pays simple interest at an annual rate of 2%. she doesn’t make any more deposits how much total interest will leila earn?

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?