Armer Company is accumulating data to use in preparing its annual profit plan for the coming year. The cost behavior pattern of the maintenance costs must be determined. The accounting staff has suggested the use of linear regression to derive an equation for maintenance hours and costs. Data regarding the maintenance hours and costs for the last year and the results of the regression analysis follow, Feb. Maintenance Machine Month Cost Hours Jan. $ 5,050 520 3,850 290 Mar. 4,450 380 Apr. 3,670 320 May 5,200 460 June 3,810 290 July 3,880 300 Aug. 5,320 540 Sept. 5,110 460 Oct. 4,900 470 4,150 330 Dec. 4,010 330 Sum $53,400 4,690 Average $ 4,458 $ 391 Average cost per hour $ 11.00 a intercept) $1,933.21 b (coefficient) 6.4396 Standard error of the estimate 180.9897 R-squared 8.9239 t-value for b 14.30 Nov. Based on the data derived from the regression analysis, 420 maintenance hours in a month mean that maintenance costs should be budgeted to the nearest dollar at