Although engineering has collected data on alternative process costs for building transmissions in the worksheet Transmission Costs, why didnt they reach a conclusion as to whether one of the proposed processes is better than the current process?

Unit Tractor Transmission Costs
Current	Process A	Process B
$242.00	$242.00	$292.00
$176.00	$275.00	$321.00
$286.00	$199.00	$314.00
$269.00	$219.00	$242.00
$327.00	$273.00	$278.00
$264.00	$265.00	$300.00
$296.00	$435.00	$301.00
$333.00	$285.00	$286.00
$242.00	$384.00	$315.00
$288.00	$387.00	$300.00
$314.00	$299.00	$304.00
$302.00	$145.00	$300.00
$335.00	$266.00	$351.00
$242.00	$216.00	$277.00
$281.00	$331.00	$284.00
$289.00	$247.00	$276.00
$259.00	$280.00	$312.00
$322.00	$267.00	$273.00
$209.00	$210.00	$281.00
$282.00	$391.00	$303.00
$304.00	$297.00	$306.00
$391.00	$346.00	$312.00
$236.00	$230.00	$287.00
$383.00	$332.00	$306.00
$299.00	$301.00	$312.00
$300.00	$277.00	$295.00
$278.00	$336.00	$288.00
$303.00	$217.00	$313.00
$315.00	$274.00	$286.00
$321.00	$339.00	$338.00