QM 670 Exam I Fall 2014................

Question # 00031962 Posted By: steve_jobs Updated on: 11/16/2014 12:53 AM Due on: 12/12/2014
Subject Business Topic General Business Tutorials:
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There are four items, each with four parts. Each part is worth six points. (Four points are free.)
1. The management of Wheeler Company has decided to develop cost formulas for its major overhead activities. Wheeler uses a highly automated manufacturing process, and power costs are a significant manufacturing cost. They have debated whether the power cost should be treated as fixed, variable, or both. Using the following data you are charged to settle this issue and determine the best cost formula for Wheeler.

Quarter

Machine Hrs.

Power Cost

1

20000

26000

2

25000

38000

3

30000

42500

4

22000

37000

5

21000

34000

6

18000

29000

7

24000

36000

8

28000

40000

a. Find the estimated fixed cost associated with the machine hours.
b. Find the estimated variable cost associated with the machine hours.
42500c. Discuss your confidence in the use of these estimates.
d. Would you recommend using this cost function? Explain.

2. You are asked to predict orders for the next two periods. You have information
available for the overtime hours used for each quarter.
Quarter
1
2
3
4
5
6
7
8
9
10
11
12
13
14

Orders
53
56
52
62
47
46
48
57
43
45
46
53
38
35

Overtime
22
23
25
31
21
22
20
29
23
12
22
26
16
17

a. Find the best method to predict orders.
b. Discuss the model fit.
c. Predict the orders for the next two periods.
d. Would you recommend using this model? Explain.

3. The data below are weekly figures from Herbert Hooleys Happy House (except for
the quarterly error figures). They sell radios, TVs, and VCRs in their electronics
department. He needs you to help him with a few things, which he will indicate to
you.
Profit
6318.96
4721.57
5049.16
5249.44
5290.08
5924.41
5251.97
4805.72
5278.60
5301.77
6121.98
5416.63
6552.89
6352.93
6693.01
5761.97
5419.50
5474.64
4650.87
4781.91

Revenue
8395.91
6300.28
6747.55
7028.56
7116.41
7951.00
7031.09
6462.88
7162.42
7136.35
8249.84
7244.79
8718.21
8494.02
8881.75
7669.10
7265.38
7302.97
6335.89
6438.23

Radios
36
26
33
29
32
41
36
31
46
43
45
29
43
46
55
48
33
35
41
48

TVs

VCRs
65
48
51
53
52
58
52
47
49
51
59
55
67
63
68
58
54
55
42
45

Quarter
48
39
40
45
49
52
44
44
51
46
56
46
48
51
43
39
47
44
49
39

Errors

2000 - 3
4
2001 - 1
2
3
4
2002 - 1
2
3
4
2003 - 1
2
3
4
2004 -1
2

32
46
19
23
34
49
22
20
31
51
16
26
37
48
22
24

a. Doug, I could surely use some help. I would like to find a useful profit formula
for my department. Please let me know if it is a good model, and if there are any
potential issues I should consider. Note that the numbers of radios, TVs, and
VCRs represent the number held on hand for the week. Please find the best
model for Herb.
b. Discuss the model.
c. Are there other issues to consider here? Explain.
d. What is your recommendation regarding use of this model? Explain.

4. The Bubble Up Bottling Company of Brussels, Belgium, is interested in forecasting
regional sales of Bubble Up over the next two years. The company has analyzed
Bubble Ups market share for its region over the past twenty quarters. Market share
has generally been growing as indicated in the following table:
Year
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5

Season
Winter
Spring
Summer
Fall
Winter
Spring
Summer
Fall
Winter
Spring
Summer
Fall
Winter
Spring
Summer
Fall
Winter
Spring
Summer
Fall

Bubble Ups Market Share (in %)
6.42
6.58
6.99
6.82
7.15
7.33
7.45
7.55
7.66
7.69
7.71
7.81
7.85
7.84
7.88
7.93
7.99
8.04
8.04
8.05

During the same five-year period, total soft drink sales in the region (as measured in
100,000s of cases) have been as follows:
Year
1
1
1
1
2
2
2
2
3
3
3
3
4
4
4
4
5
5
5
5

Season
Winter
Spring
Summer
Fall
Winter
Spring
Summer
Fall
Winter
Spring
Summer
Fall
Winter
Spring
Summer
Fall
Winter
Spring
Summer
Fall

Sales in Region (in 100,000s of cases)
114
130
158
131
114
146
177
142
124
151
175
146
132
160
184
144
134
166
205
148

The company wants to forecast sales for the next two years (6 and 7).
a. What approach will you use for this problem? Explain.
b. Obtain forecasts for the next two years.
c. Discuss the performance of your method.
d. What is your recommendation regarding the use of your method?

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