A bread-making factory has the production process shown in the figure below. There are three operations (mixing, baking and packaging) in sequence, but it does not matter which oven is used. The factory is considering purchasing faster equipment to replace one of the existing operations. Which operation should be first considered? 
Definitions:
Skewed To The Right
Describes a distribution of data where the tail on the right side of the histogram is longer or fatter than the left side, indicating that most of the data are concentrated to the left.
Symmetrical
A shape or distribution that is mirrored equally on both sides of a central axis.
Misfiring Spark Plugs
An engine condition where one or more spark plugs fail to ignite the fuel-air mixture in the cylinder, leading to inefficient engine performance.
Eight-Cylinder
Referring to an engine with eight cylinders, typically known for providing a higher level of performance and power.
Q14: One limitation of the net present value
Q109: Investments with identical net present values will
Q112: Sustainability is not associated with corporate social
Q115: _ is doing the job properly with
Q176: When making a location decision at the
Q186: "Quality lies in the eyes of the
Q205: Inputs to a production system that do
Q236: Which of the following terms implies an
Q273: One guideline for determining the arrangement and
Q274: "A special arrangement of machinery and equipment