Tom opens a bank account and makes an initial deposit of $500. the banker tells tom that he is going to revive an annual rate of 6% on his investment. find the bank balance assuming tom leaves the account untouched for 15 years.

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?