Reference no: EM131040007
1. Chapter 11 Exercise 6 (page 302)A supplier quotes a Cp value of 1.7 After a discussion with representatives you determine that they are calculating standard deviation as you desire but you are concerned that they had a sample size of only 20 Determine a 95% confidence interval for the population Cp
2. Chapter 11 Exercise 7 (page 302) An organization requires a Cp value of 2.00 given a smaple size of 30 determine the min. level for a sampled Cp value in order to be 97.5% confident that the Cp population value is 2.00
3. Data have been collected to test whether the thickness of a poly silicon coating depends upon the deposition temperature. Test whether there is any difference in the thickness at different temperature levels at α = 0.05 (See Table 1).
Table 1
Temperature Polysilicon Thickness
|
1
|
110
|
112
|
109
|
115
|
|
2
|
105
|
99
|
100
|
103
|
|
3
|
115
|
120
|
109
|
117
|
|
4
|
102
|
110
|
108
|
102
|
4. A chemical engineer has reason to believe that the batches of raw materials used in the manufacture of a compound differ significantly in Nitrogen content. Currently the company uses many batches: for this study, the engineer randomly selected five of these batches and recorded 3 observations on each batch. The data is in Table 2. Conduct ANOVA at α = 0.01 and test whether there is any difference
Table - Batches
| 1 |
2 |
3 |
4 |
5 |
| 8.5 |
8.4 |
8.4 |
8.5 |
8.9 |
| 8.6 |
8.5 |
8.9 |
8.4 |
8.6 |
| 8.2 |
8.3 |
8.2 |
8.2 |
8.2 |
5. . Suppose the sample means and standard deviations are observed for the samples of size 5
a. Construct the X bar and s chart.
b. Verify if the process is in control
c. Estimate the population standard deviation
|
Sample
|
X bar
|
s
|
Sample
|
X bar
|
s
|
|
1
|
2.15
|
0.14
|
11
|
2.10
|
0.17
|
|
2
|
2.07
|
0.10
|
12
|
2.19
|
0.13
|
|
3
|
2.10
|
0.11
|
13
|
2.14
|
0.07
|
|
4
|
2.14
|
0.12
|
14
|
2.13
|
0.11
|
|
5
|
2.18
|
0.12
|
15
|
2.14
|
0.11
|
|
6
|
2.11
|
0.12
|
16
|
2.12
|
0.14
|
|
7
|
2.10
|
0.14
|
17
|
2.08
|
0.07
|
|
8
|
2.11
|
0.10
|
18
|
2.18
|
0.10
|
|
9
|
2.06
|
0.09
|
19
|
2.06
|
0.06
|
|
10
|
2.15
|
0.08
|
20
|
2.13
|
0.14
|
|
Movement along the demand curve
: A movement along the demand curve to the left may be caused by:
|
|
Positioned in the minds of the consumer
: How is Southwest Airlines positioned in the minds of the consumer? Do you think Southwest Airlines should change this positioning? If yes, to what position and how might Southwest Airlines do this? If no, why not? Explain.
|
|
Which marriage pattern allows man to have more than one wife
: A biological term that refers to ascribed, genetic, anatomical, and hormonal differences between men and women.
|
|
Tradition of their native american ancestors
: In the tradition of their Native American ancestors, Decorah Custom Canoes specialized in creating handcrafted canoes using only the finest natural materials.
|
|
Estimate the population standard deviation
: Estimate the population standard deviation - Construct the X bar and s chart and Determine a 95% confidence interval for the population Cp
|
|
Possible combinations of two products
: What is A graphical representation that shows the possible combinations of two products that an economy can produce, given that its productive resources are fully employed and efficiently used?
|
|
What macro-environmental factors external to the company
: What macro-environmental factors external to the company should Southwest Airlines be most concerned about? How do these factors affect Southwest Airlines? Explain.
|
|
Regard to stocking lifesaving medicines-short shelf lives
: The Wayne Hills Hospital in tiny Wayne, Nebraska, faces a problem common to large, urban hospitals as well as small, remote ones like itself. The problem is deciding how much of each type of whole blood to keep in stock. Discuss the implications of t..
|
|
How much money does sharon need now to fund her travels
: After speaking with a number of banks, Sharon learns she will only be able to invest her funds at 6%. How much does she need now to fund her travels?
|