Janet solved the inequality and was asked to express her answer in set notation. Determine if she made a mistake, correct the mistake if she made one and create the correct expression in set notation. -x - 2 < - 3 -x < - 1
X < - 1
Set notation: { x | x < -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?