Please answer all parts with detailed calculations and good formatting and make sure the answer is 100% correct, else leave it for the other tutor to answer. Otherwise i will downvote the answer and report it for unprofessionalism for sure. Please don't use AI or Chat GPT also make sure there is no plagiari.sm.

The McGraw Company is accumulating data to be used 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 that linear regression be employed to derive an equation in the form of y = a + bx for maintenance costs. Data regarding the maintenance hours and costs for last year and the results of the regression analysis are as follows: (CMA adapted) Hours of Maintenance Activity Costs January 570 $ 4, 400 February 480 3,200 March 600 3,800 April 440 3, 020 May 750 4,550 June 490 3, 160 July 480 3,230 August 780 4, 670 September 730 4, 460 October 700 4, 250 November 540 3,500 December 520 3 , 360 Sum 7, 080 $ 45, 600 Average 590 3,800 A coefficient 922. 07 B coefficient 4. 8778 Standard error of the a coefficient 352. 891 Standard error of the b coefficient 0. 58712 Standard error of the estimate 233.376 0. 87346 T-value a 2. 613 T-value b 8. 308What is the fixed cost per month using the high-low method to estimate the cost equation? Multiple Choice O $886. O $930. O $1,770. O $3,490