An accountant wishes to predict direct labor cost (y) on the basis of the batch size (x) of a product produced in a job shop. Data for 12 production runs are given in the table below, along with the Excel output from fitting a least squares regression line to the data. Direct Labor Cost Data Direct Labor Cost. y (S100s) Batch Size, x 663 381 138 861 35 12 493 46 52 100 75 251 435 772 Batch Size Line Fit Plot 1000 +LaborCost 18.488+ 10.146 BSize 800 600 400 200 Batch Size (a) Find bi and Do. (Provide your answers to 3 decimals places.) 18.488 (b) Interpret the meanings of b and by. Does the interpretation of bo make practical sense? bis the estimated b is the estimated batch size ncrease when( mean labor cost = 0; no in mean labor cost for every 1 unit increase in batch size (c) Wite the least squares prediction equation. (Answers to 3 decimal places.) 18.488 10.148 x (d) Use the least squares line to obtain a point estimate of the mean direct labor cost for all batches of size 60 and a point prediction of the direct labor cost for an individual batch of size 60. (Round your answer to 3 decimal places.) 3(60)-6272468 hundreds of dollars