Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
13th Edition
ISBN: 9780135225899
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 52P
Bus and subway ridership for the summer months in London, England, is believed to be tied heavily to the number of tourists visiting the city. During the past 12 years, the data on the next page have been obtained:
Associated Press
| YEAR (SUMMER MONTHS) | NUMBER OF TOURISTS (IN MILLIONS) | RIDERSHIP (IN MILLIONS) | ||
| 1 | 7 | 1.5 | ||
| 2 | 2 | 1.0 | ||
| 3 | 6 | 1.3 | ||
| 4 | 4 | 1.5 | ||
| 5 | 14 | 2.5 | ||
| 6 | 15 | 2.7 | ||
| 7 | 16 | 2.4 | ||
| 3 | 12 | 2.0 | ||
| 3 | 14 | 2.7 | ||
| 10 | 20 | 4.4 | ||
| 11 | 15 | 3.4 | ||
| 12 | 7 | 1.7 | ||
- a. Plot these data and decide if a linear model is reasonable.
- b. Develop a regression relationship.
- c. What is expected ridership if 10 million tourists visit London in a year?
- d. Explain the predicted ridership if there are no tourists at all.
- e. What is the standard error of the estimate?
- f. What is the model’s correlation coefficient and coefficient of determination?
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Alvin Cheah is a marketing analyst for Rockstar Travel Company. He wants to analyze the trend of international tourist arrival in Tawau by using international tourist arrival rate and flight delayed rate over the past 10 years as given in Table 2 below: (Hint: Provides your answers in two decimal points)
Table 2
Year
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
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35.5
28.0
30.3
36.0
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72.4
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79.3
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4.2
3.8
3.8
3.5
4.6
4.5
4.6
4.6
4.7
4.5
a） Propose ONE (1) forecasting model that can be used by Alvin. Why would you proposed that particularmodel?
b) Develop the forecasting model that you suggest in
(i). Briefly explain your
Alvin Cheah is a marketing analyst for Rockstar Travel Company. He wants to analyze the trend of
international tourist arrival in Tawau by using international tourist arrival rate and flight delayed rate over
the past 10 years as given in Table 2 below: (Hint: Provides your answers in two decimal points)
Table 2
Year
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
Arrival
35.5
28.0
30.3
36.0
49.5
56.0
72.4
71.0
79.3
96.0
C000)
Delayed
4.2
3.8
3.8
3.5
4.6
4.5
4.6
4.6
4.7
4.5
rate
(1) Propose ONE (1) forecasting model that can be used by Alvin. Why would you proposed that
particular model?
(5 marks)
(ii) Develop the forecasting model that you suggest in (i). Briefly explain your model.
(20 marks)
12.2 The manager of the I-85 Carpet outlet needs to be able to forecast accurately the
demand for Soft Shag carpet (its biggest seller). If the manager does not order enough
carpet from the carpet mill, customers will buy their carpets from one of the outlets
many competitors. The manager has collected the following demand data for the past 8
months.
Month
1
2
3
4
5
6
7
8
Demand for Soft Shag Carpet (1000 yd)
5
10
6
8
14
10
9
12
a. Compute a three-month moving average forecast for months 4 through 9.
Chapter 4 Solutions
Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
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