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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Sales of tablet computers at Marika Gonzalez's electronics store in Washington, D.C., over the past 10 weeks are shown in the table below:
Week
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2
3
4
5
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7
8
9
10
Demand 21 21
27
38 25
30 35
24 25
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2
3
4
5
6
7
8
9
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21
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38 25
30
35
24 25 30
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21
24 31
28
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b) For the forecast developed using exponential smoothing (a = 0.50 and initial forecast 21.0), the MAD = |||||sales (round your response to two decimal places).
Sales of tablet computers at Marika Gonzalez's electronics store in Washington, D.C., over the past 10 weeks are shown in the table below:
Week
Demand
1
2
3
4
5
6
7
8
9
10
21
21
27
38
25
30
35 24 25
30
a) The forecast for weeks 2 through 10 using exponential smoothing with a = 0.50 and a week 1 initial forecast of 21.0 are (round your responses to two decimal places):
Week
1
2
3
4
5
Demand 21 21
27 38
Forecast 21.0
☐ G
☐
☐
6
7
25 30 35
∞ ☐
8
9
10
24
25
30
Each machine costs $3 Million. Building the room with all its attendant safety protection and other ancillary costs increases the spending by an additional $2.0 million dollars per MRI suite. Each machine can perform 2000 scans per year.
Each reading of an MRI scan by a radiologist, along with other per-scan-related costs, is $500 per scan.
The machine will last five years.
Don’t worry about discount rates for this problem
Graph the total costs over 5 years as a function of sales for 0-3000 patients annually. Hint: you may need to add a second MRI at some point.
Suppose that you want to make a profit of $500 per scan at a target volume of 1000 patients per year, and you purchase only one machine. Superimpose the total revenue curve on top of the total cost curve in (1).
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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