You decide to take $400 out of your piggy bank at home and place it in the bank. if the reserve requirement is 5 percent, how much can your $400 increase the amount of money in the economy?

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?