EBK MANUFACTURING ENGINEERING & TECHNOL
7th Edition
ISBN: 8220100793431
Author: KALPAKJIAN
Publisher: PEARSON
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Textbook Question
Chapter 36, Problem 36QTP
In an inspection with a sample size of 12 and a sample number of 40, it was found that the average range was 14 and the average of averages was 80. Calculate the control limits for averages and for ranges.
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Chapter 36 Solutions
EBK MANUFACTURING ENGINEERING & TECHNOL
Ch. 36 - Define the terms sample size, random sampling,...Ch. 36 - What are chance variations?Ch. 36 - Prob. 3RQCh. 36 - Define standard deviation. Why is it important...Ch. 36 - Describe what is meant by statistical process...Ch. 36 - When is a process out of control? Explain.Ch. 36 - Explain why control charts are developed. How...Ch. 36 - What is a loss function? How is it used?Ch. 36 - What do control limits indicate?Ch. 36 - Prob. 10RQ
Ch. 36 - What is acceptance sampling? Why was it developed?Ch. 36 - Prob. 12RQCh. 36 - What is meant by six-sigma quality?Ch. 36 - Prob. 14RQCh. 36 - Prob. 15RQCh. 36 - Give three methods of nondestructive testing...Ch. 36 - Explain why major efforts are continually being...Ch. 36 - Prob. 18QLPCh. 36 - Prob. 19QLPCh. 36 - Prob. 20QLPCh. 36 - Prob. 21QLPCh. 36 - Prob. 22QLPCh. 36 - What are the advantages of automated...Ch. 36 - Prob. 24QLPCh. 36 - Prob. 25QLPCh. 36 - Explain why GO and NOT GO gages (see Section...Ch. 36 - Prob. 27QLPCh. 36 - Prob. 28QLPCh. 36 - Prob. 29QLPCh. 36 - Prob. 31QLPCh. 36 - Beverage-can manufacturers try to achieve failure...Ch. 36 - Assume that in Example 36.3 the number of samples...Ch. 36 - Calculate the control limits for averages and...Ch. 36 - Calculate the control limits for (a) number of...Ch. 36 - In an inspection with a sample size of 12 and a...Ch. 36 - Prob. 37QTPCh. 36 - The average of averages of a number of samples of...Ch. 36 - Prob. 39QTPCh. 36 - Prob. 40QTPCh. 36 - Prob. 41SDPCh. 36 - Describe your thought on whether products should...Ch. 36 - Prob. 44SDPCh. 36 - Prob. 45SDPCh. 36 - Prob. 46SDPCh. 36 - Prob. 47SDPCh. 36 - Prob. 48SDPCh. 36 - Many components of products have a minimal effect...
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- 41. A batch of pins with p(12 ± 0.01) mm in diameter is machined by means of centerless grinding machine. It is found through measuring 100 pins taken from the batch of pins at random that its diameters approach to normal distribution, and the mean value X = 11.99 mm, the root-mean-square deviation o = 0.003. (1) To draw the diameter error distribution curve of pins. (2) To calculate the process capability coefficient C, of this operation. Cp-T760 Answers:arrow_forwardProblem 21.2. An inspector reports a total of 16 defects out of a total batch size of 200 parts. On closer examination, it is determined that three of these reported defects were in fact good pieces, while a total of seven defective units were undetected by the inspector. What is the inspector’s accuracy in this instance? Specifically, what are the values of p1 and p2? (b) What was the true fraction defect rate?arrow_forward4. The number of flaws in bolts of cloth in textile manufacturing is assumed to be Poisson distributed with a mean of 0.1 flaw per square meter. (a) What is the probability that there are two flaws in 1 square meter of cloth? (b) What is the probability that there is one flaw in 10 square meters of cloth? (c) What is the probability that there are no flaws in 20 square meters of cloth? (d) What is the probability that there are at least two flaws in 10 square meters of cloth?arrow_forward
- Using the figures in Table 1, forecast the number of surgeries in year 9 using a 3-year moving average and exponential smoothing using an alpha of 0.20and assuming that the forecast for period 8 is 750arrow_forwardResearch and identify one type of geometric tolerances (besides obvious specs like length, distance, diameter, etc.) that can be called out on a technical drawing. Explain how this tolerance is definedarrow_forwardThe design specification on the part is that the diameter = 45.000 ± 0.150 mm. (a) What proportion of parts fall outside the tolerance limits? (b) If the process is adjusted so that its mean diameter = 45.000 mm and the standard deviation remains the same, what proportion of parts fall outside the tolerance limits?arrow_forward
- 7. In practical terms, explain how a LOW p-value connote SIGNIFICANCE (Recall that the smaller the p-value is, the more significant the factor becomes)? 8.What is the significance of Coefficient of Determination, R2 9. When the test for normality fails, what are the things to resort to? 10.What advantages, if any, are there in the use of a 3k full factorial designs over the 2k designs? 11. In selecting an appropriate fractional factorial design, what considerations should be taken to guard the validity of the results? 12. When the following test statistics yield a LOW value, what does this mean? (a) R2 (b) Lack of Fit (p-value), (c) Desirability Indexarrow_forwardCalculate to the correct number of significant figures. (9443+45-9.9)x8.1x10^6arrow_forwardSome international (e.g., ISO) standards become national standards. Give one example, citing the original standard and its national counterpart.arrow_forward
- 8) Chapter 3: Problem 3.21: One of the inspectors in the quality control department has frequently used the Brinell and Rockwell hardness tests, for which equipment is available in the company. He claims that the Rockwell hardness test is based on the same principle as the Brinell test, which is that hardness is measured as the applied load divided by the area of the impression made by an indentor. Is he correct? If not, how is the Rockwell test different?arrow_forwardPlease answer within 30 mins show the complete solutions and select the correct answerarrow_forwardSome national (e.g., IEEE) standards become international standards. Give one example, citing the original standard and its international counterpart.arrow_forward
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