A square has side lengths of 3 meters long. A Square root 6 m
B 3 m
C square root 12 m
D square root 18 m

HELP HELP HELp Due by the end of class

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?