Lovely Professional University 2010 B.Tech Computer Science and Engineering Assignment -3 Quality Engineering and Management Systems - Question Paper
Course Code: MEC 309
Course Name: Quality Engineering & Management Systems
Assignment No. 3
Part A
Q.1 A construction company intends to test the efficiency of 3 various insulators. Since the
area where the company builds has varying temperature differentials, the subsequent experimental
procedure has been planned. The company has divided the area into 4 geographical regions, based
on climate differences. Within every geographical regions, it randomly uses every of the 3
insulators and records the energy loss as an index. Smaller values of the index correspond to lower
losses. Table indicates the energy loss data. [table with attachment]
a) Is there a difference in the mean energy loss for the 3 insulator? Test at a significance
level of 10 %.
b) obtain a 99 % confidence interval for the mean energy loss index for insulator 3.
c) obtain a 90 % confidence interval for the difference in the mean energy loss index of insulators two
and 3. Is there is a difference in these 2 means.
Q.2 A retail company is interested in testing the impact of 4 various pricing policies (A, B,
C and D) on sales. The company suspects that variation in sales could be affected by factors other
than the pricing policy, such as store location and sales quantities. The company has 4 location
classifications: Northeast, East, Midwest and Southwest. It has 4 classes of sales volume: 1, 2,
3 and four with class one representing the largest volume, and the others representing decreasing quantity
in succession. every pricing policy is applied in every geographic region and every sales quantity class
exactly once. Table indicates the sales (in thousands in dollars) for a 3 month period, with the
pricing policy shown appropriately. [table with attachment]
Is there a difference in the pricing policies in terms of mean sales? Test at a level of
significance of five %.
Q.3 Write the full procedure for Two-Factor Factorial Experiment using a completely Randomized
Design.
Part B
Q.4 Write down the steps in conducting an experiment in DOE.
Q.5 describe the ANOVA technique.
Q.6 What is process capability? What do you understand by Cp and Cpk? discuss it with example.
Q.7 discuss Pareto analysis and Fish bone diagram and provide 1 example of every.
Course Name: Quality Engineering & Management Systems
Course Code: MEC 309
Assignment No. 3
DOS: 25/04/2010 (For OE 165) 26/04/2010 (For OE 166)
DOA: 15/04/2010
Bonus may be given for early submission and vice versa.
Part A
A construction company intends to test the efficiency of three different insulators. Since the area where the company builds has varying temperature differentials, the following experimental procedure has been planned. The company has divided the area into four geographical regions, based on climate differences. Within each geographical regions, it randomly uses each of the three insulators and records the energy loss as an index. Smaller values of the index correspond to lower losses. Table shows the energy loss data.
Q.1
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est at a | |||||||||||||||||||||||||||||||||||||||||||||||||
Is there a difference in the mean energy loss for the three insulator? significance level of 10 %.
a)
Find a 99 % confidence interval for the mean energy loss index for insulator 3. Find a 90 % confidence interval for the difference in the mean energy loss index of insulators 2 and 3. Is there is a difference in these two means.
b)
c)
A retail company is interested in testing the impact of four different pricing policies (A, B, C and D) on sales. The company suspects that variation in sales could be affected by factors other than the pricing policy, such as store location and sales volumes. The company has four location classifications: Northeast, East, Midwest and Southwest. It has four classes of sales volume: 1, 2, 3 and 4 with class 1 representing the largest volume, and the others representing decreasing volume in succession. Each pricing policy is applied in each geographic region and each sales volume class exactly once. Table shows the sales (in thousands in dollars) for a three month period, with the pricing policy shown appropriately.
Q2
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Is there a difference in the pricing policies in terms o mean sales? Test at a level of | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
significance of 5 %.
Q.3 Write the full procedure for Two-Factor Factorial Experiment using a completely Randomized Design.
Part B
Q.4 Write down the steps in conducting an experiment in DOE.
Q.5 Define the ANOVA technique.
Q.6 What is process capability? What do you understand by Cp and Cpk? Explain it with example.
Q.7 Explain Pareto analysis and Fish bone diagram and give one example of each.
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Attachment: |
| Earning: Approval pending. |
