Multiple Regression Analysis for a Special Decision (Requires Computer Spreadsheet) For billing purposes, assume Phoenix Family Medical Clinic classifies its services into one of four major procedures, X1 through X4. A local business has proposed that Phoenix provide health services to employees and their families at the following set rates per procedure: Because these rates are significantly below the current rates charged for these services, management has asked for detailed cost information on each procedure. The following information is available most recent 12 months. Required a. Use multiple regression analysis to determine the unit cost of each procedure. How much variation in monthly cost is explained by your cost-estimating equation? Round each answer to two decimal places