Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Textbook Question
Chapter 13, Problem 1CQ
Which of the following is NOT true about the distribution function for a
- a. It ranges from 0 to 1.
- b. It increases as the quantity increases.
- c. It generally has a bell shape when graphed.
- d. It returns the probability that the outcome from the normal distribution is a certain quantity or lower.
Expert Solution & Answer
Summary Introduction
To identify: The statement that is not true regarding the distribution function of a normal distribution.
Explanation of Solution
Correct option: (c)
Correct answer:
It generally has a bell shape when graphed.
Justification:
Normal distribution is a common continuous probability distribution. The normal distribution graph depicts a bell shaped graph normally. The meaning of the graph is that data present near the mean occur more frequently than the data that are present far away from the mean. It is also known as the bell-curve. But, the distribution function is always increasing and never has a bell shape, only the density function has the bell shape.
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Question 1
M&H company ltd. sells television sets and has collected monthly sales data (in units) for the past 12
months as shown in table 1below:
TABLE 1
Month
Sales (Units)
1
120
2
135
3
150
4
165
5
180
6
200
7
195
8
210
9
225
10
240
11
255
12
270
Using the data provided, answer the following questions:
a. Using a 3-month weighted moving average with weights 0.5, 0.3, and 0.2 (most recent month
having the highest weight), calculate the forecast for month 13.
[2 marks]
b. If the company applies an exponential smoothing method with a smoothing constant (a) = 02,
and assumes an initial forecast of 120 units for Month 1, calculate the forecast for month 13.
[6 marks]
c. Calculate the Mean Absolute Deviation (MAD) for the exponential smoothing method and
weighted moving average method using the actual sales data for Months 4 to 12 and determine
which method is more accurate.
[8 marks] d.
Compute the values of a (intercept) and b (slope) using the least squares method. [7 marks]
e. Use the…
Question 4
MGM12026 Production and Operations Management semester il 2024
A company operates a manufacturing plant that produces two products, A and B. The plant has the
following capacity data:
.
.
Design Capacity: 15,000 machine hours per month
Effective Capacity: 12,000 machine hours per month
Actual Output (Utilized Capacity): 10,000 machine hours per month
Additionally, the plant produces Product A and Product B, with the following production data:
Product Demand (Units)
Processing Time Contribution Margin ($
(hours per unit)
per unit)
A
3,000
2.5
40
B
4,000
1.5
30
a. Calculate the plant's
i. Capacity Utilization
[3 marks] ii. Effective Capacity Utilization
[3 marks] iii.
Efficiency. Interpret the results. [3 marks] b. Compute the total machine hours required to
meet full demand for both products. [5 marks]
c. Determine whether the plant has sufficient capacity to meet full demand. If not, calculate the
shortfall in machine hours.
[3 marks]
d. Using the contribution margin per…
Chapter 13 Solutions
Operations Management
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Ch. 13 - Prob. 11CQCh. 13 - Prob. 12CQCh. 13 - Prob. 13CQCh. 13 - Prob. 14CQCh. 13 - Dan McClure owns a thriving independent bookstore...Ch. 13 - Flextrola, Inc., an electronics systems...Ch. 13 - Monsanto sells genetically modified seed to...Ch. 13 - Fashionables is a franchisee of The UnLimited, the...Ch. 13 - Teddy Bower is an outdoor clothing and accessories...Ch. 13 - Prob. 6PACh. 13 - Goop Inc. needs to order a raw material to make a...Ch. 13 - Geoff Gullo owns a small firm that manufactures...Ch. 13 - Prob. 9PACh. 13 - Prob. 10PACh. 13 - Prob. 11PA
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