Intro Stats
4th Edition
ISBN: 9780321826275
Author: Richard D. De Veaux
Publisher: PEARSON
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Chapter 17.4, Problem 4JC
To determine
Define the parameter.
State null and alternative hypothesis.
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A company makes parts that cost $35.00 in material and labor. 92% of the parts are produced defect
free and are sold for full price at $110 each. 2% of the parts made must be scrapped. Scrap parts are
sold for $8.00 each. The remaining 6% of the parts made must be reworked at a cost of $12.00 each.
After rework 1% still must be scrapped and the other 5% is sold at a discounted price of $90 each.
a. Draw the tree diagram showing the quality cost situation.
b. Determine the earnings per part.
c. Determine the cost of poor quality (COPQ).
d. Determine the earnings per part and COPQ if the rework operation was shut down and the parts
that required reworking were just sold for scrap instead.
Answers-
B-70.22
c-4.78
d-66.84, 8.16
The amount of income spent on housing is an important component of the cost of living. The total costs of housing for homeowners might include mortgage payments, property taxes, and utility costs (water, heat, electricity). An economist selected a sample of 20 homeowners in New England and then calculated these total housing costs as a percent of monthly income, 5 years ago and now. The information is reported below. Is it reasonable to conclude the percent is less now than 5 years ago?
Homeowner
Five Years Ago
Now
Homeowner
Five Years Ago
Now
1
17
%
10
%
11
35
%
32
%
2
20
39
12
16
32
3
29
37
13
23
21
4
43
27
14
33
12
5
36
12
15
44
40
6
43
41
16
44
42
7
45
24
17
28
22
8
19
26
18
29
19
9
49
28
19
39
35
10
49…
The Bennett Distribution Company, a subsidiary of a major home appliance manufacturer, wants to forecast sales
for next year. The Atlantic Coast branch, with current sales of $193.8 million, is expected to achieve
sales growth of 7.25%; the Midwest branch, with current sales of $79.3 million, is expected to have a
increase of 8.20%, and that the Pacific Coast branch, with current sales of $57.5 million, increase its sales 7.15%.
What is the predicted average growth rate in sales for the next year?
Select one:
Or a. The predicted average rate in sales for the next year is 7.46%
Or b. The predicted average rate in sales for the next year cannot be calculated due to lack of information
O c. The predicted average rate in sales for the next year is 22.6%
Or d. The predicted average rate in sales for the next year is 7.53%
6
Chapter 17 Solutions
Intro Stats
Ch. 17.2 - A research team wants to know if aspirin helps to...Ch. 17.2 - An allergy drug has been tested and found to give...Ch. 17.2 - The new drug is tested and the P-value is 0.0001....Ch. 17.4 - Prob. 4JCCh. 17.4 - Prob. 5JCCh. 17.4 - Prob. 6JCCh. 17 - Prob. 1ECh. 17 - Prob. 2ECh. 17 - Prob. 3ECh. 17 - Prob. 4E
Ch. 17 - SECTION 15.3 7. Hispanic origin According to the...Ch. 17 - Empty houses According to the 2010 Census, 11.4%...Ch. 17 - Prob. 7ECh. 17 - Prob. 8ECh. 17 - Prob. 9ECh. 17 - Prob. 10ECh. 17 - CHAPTER EXERCISES 15. Hypotheses Write the null...Ch. 17 - More hypotheses Write the null and alternative...Ch. 17 - Negatives After the political ad campaign...Ch. 17 - Dice The seller of a loaded die claims that it...Ch. 17 - Prob. 15ECh. 17 - Cars A survey investigating whether the proportion...Ch. 17 - Prob. 17ECh. 17 - Prob. 18ECh. 17 - Prob. 19ECh. 17 - Prob. 20ECh. 17 - Dowsing In a rural area, only about 30% of the...Ch. 17 - Abnormalities In the 1980s, it was generally...Ch. 17 - Prob. 23ECh. 17 - Educated mothers The National Center for Education...Ch. 17 - 25. Contributions, please, part II In Exercise 23...Ch. 17 - 26. Take the offer, part II In Exercise 24 of...Ch. 17 - 27. Law school 2007 According to the Law School...Ch. 17 - Prob. 28ECh. 17 - Prob. 29ECh. 17 - Scratch and dent An appliance manufacturer...Ch. 17 - Prob. 31ECh. 17 - Prob. 32ECh. 17 - WebZine A magazine is considering the launch of an...Ch. 17 - Seeds A garden center wants to store leftover...Ch. 17 - Prob. 35ECh. 17 - Prob. 36ECh. 17 - Prob. 37ECh. 17 - Acid rain A study of the effects of acid rain on...Ch. 17 - Prob. 39ECh. 17 - TV ads A start-up company is about to market a new...Ch. 17 - Prob. 41ECh. 17 - Prob. 42E
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