What are the coordinates for v’ after a dilation with scale factor 1/3 and center (0,0)? original v is (3,-2) , -2/3) b. (1,3) c. (1,-2/3) d. (1,1)

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?