Find the linear regression equation for the following set of data rounding answers to the nearest hundredth. Hours worked Money Earned $ 10 450 20 680 8 342 35 1100 15 500 28 845

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?