The figure shown has two parallel lines cut by a transversal: a pair of parallel lines is shown, crossed by a transversal. angles are identified as 1, 2, 3, 4, 5, 6, 7, and 8. angles 1-4 are on the top line clockwise from upper left. angles 5-8 are on the lower line clockwise from upper left. use the figure to complete the sentence. (4 points) ∠7 and are alternate exterior angles.

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?