3.What totaloverhead costs would you expect the company to incur at an operating level of 65,000 machine-hours?

1.Identify each of the company's expenses (including cost of goods sold) as either variable, fixed, or mixed.
2.
Using the high-low method, separate each mixed expense into variable and fixed elements.
State the cost formula for each mixed expense.
3.
Redo the company's income statement at the 4,500-unit level of activity using the
contribution format.
PROBLEM 2-19 High-Low and Scattergraph Analysis
[LO4
]
Sebolt Wire Company heats copper ingots to very high temperatures by placing the ingots in a
large heat coil. The heated ingots are then run through a shaping machine that shapes the soft
ingot into wire. Due to the long heat-up time, the coil is never turned off. When an ingot is
placed in the coil, the temperature is raised to an even higher level, and then the coil is allowed
to drop to the “waiting” temperature between ingots. Management needs to know the variable
cost of power involved in heating an ingot and the fixed cost of power during “waiting” periods.
The following data on ingots processed and power costs are available:
p. 62

Required:
1.
Using the high-low method, estimate a cost formula for power cost. Express the formula in
the form
Y
=
a
+
bX.
2.
Prepare a scattergraph by plotting ingots processed and power cost on a graph. Draw a
straight line though the two data points that correspond to the high and low levels of activity.
Make sure your line intersects the
Y
-axis.
3.Comment on the accuracy of your high-low estimates assuming a least-squares regression analysis estimated the total fixed costs to be $1,185.45 per month and the variable cost to be $37.82 per ingot. How would the straight line that you drew in requirement 2 differ from a straight line that minimizes the sum of the squared errors?

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