A student used his place value chart to show a number. After the leacher instructed him to multiply number by 10, the chart showed 3,200-4. Draw a picture of what the place value chart looked like at:

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?