1 IE 361 Exam 1 Fall 2007 I have neither given nor received unauthorized assistance on this exam. ________________________________________________________ Name Date2This exam consists of 20 multiple choice questions. There is a single best answer for each question. Circle EXACTLY ONE response for each question on this answer sheet. 1. A B C D E 2. A B C D E 3. A B C D E 4. A B C D E 5. A B C D E 6. A B C D E 7. A B C D E 8. A B C D E 9. A B C D E 10. A B C D E 11. A B C D E 12. A B C D E 13. A B C D E 14. A B C D E 15. A B C D E 16. A B C D E 17. A B C D E 18. A B C D E 19. A B C D E 20. A B C D E3 1. "Quality of conformance" a) can in all cases only be achieved using state-of-the art processes b) is concerned with the appropriateness of features and configuration of a product c) has to do with small variation d) Exactly 2 of the responses a) through c) are correct completions of the sentence. e) None of the responses a) through c) are correct completions of the sentence. 2. The "continuous improvement" emphasis in modern quality assurance a) essentially requires a "process orientation" b) is a practical necessity in a competitive global business environment c) can be thought of in ethical terms as "the way things 'should' be" d) Exactly 2 of the responses a) through c) are correct completions of the sentence. e) All of the responses a) through c) are correct completions of the sentence. 3. Several modes on a histogram showing measured diameters of axels produced by a turning process suggest a) multiple versions of some element in the production process b) multiple versions of the measurement process c) multiple versions of both some element of the production process and of the measurement process d) multiple versions of some element of the production process, or of the measurement process, or both e) None of the responses a) through d) is a correct completion of the sentence. 4. Process analysis tools like flowcharts and Ishikawa diagrams a) can help identify important data needs b) are really only useful when working on very simple and technologically mature processes c) should be employed early in a process improvement effort d) Exactly 2 of the responses a) through c) are correct completions of the sentence. e) All of the responses a) through c) are correct completions of the sentence. 5. Regarding basic concepts of metrology, a) a problem with measurement validity can be addressed through a calibration study b) a bathroom scale that is broken and always reads 150lbs is nevertheless a "precise" device c) "accuracy" and "precision" are different words for the same concept d) Exactly 2 of the responses a) through c) are correct completions of the sentence. e) None of the responses a) through c) are correct completions of the sentence. 6. "Linearity" (in the sense that metrologists use the word) of a measurement device a) holds if () 2average measurement measurand=× b) holds if 3average measurement measurand=+ c) holds if () 32average measurement measurand=+× d) Exactly 2 of the responses a) through c) are correct completions of the sentence. e) All of the responses a) through c) are correct completions of the sentence.4Fact: The upper 2.5% point of the 2,2F distribution is about 39.0. 7. The same specimen of 20lb bond paper is weighed 13n= times on scale #1 and 23n = times on scale #2, with resulting means and standard deviations 13.4760gy=, 23.4633gy = , 1.0056gs = , and 2.0133gs = . Based on 95% confidence limits made from these values, one can conclude a) that there is no clear difference in either scale biases or standard deviations b) that there is no clear difference in scale biases, but there is a clear difference in scale standard deviations c) that there is a clear difference in scale biases, but no clear difference in scale standard deviations d) that there are clear differences in both scale biases and in scale standard deviations e) One of a) through d) is a correct completion of the sentence and sample sizes are large enough to see definitively which scale is most accurate. 8. Two different specimens of 20lb bond paper are weighed respectively 13n = and 23n=times on the same scale with resulting means and standard deviations 13.4760gy=, 23.2567gy = , 1.0056gs = , and 2.0133gs = . Based on 95% confidence limits made from these values, one can conclude a) that there is no clear difference between weights of the specimens b) that there is a clear difference between weights of the specimens c) nothing about the true weight of specimen #1 d) Both a) and c) are correct completions of the sentence. e) Both b) and c) are correct completions of the sentence. (For questions 9 and 10) A student group studied the densities of some 23Nd 0 pellets produced by a stable production process. Densities of 6 different pellets were measured and the resulting values had sample mean 5.70g/cc and standard deviation .80g/cc. The density of a 7th pellet was measured 5 times and the resulting values had mean 4.60g/cc and standard deviation .25g/cc. 9. 95% confidence limits for a true mean pellet density for this process a) are 5.70 .83g/cc± b) are 5.70 2.06g/cc± c) are 4.60 .31g/cc± d) are 4.60 .69g/cc± e) can not be determined from the given information 10. Approximate 95% confidence limits for a specimen-to-specimen standard deviation of actual pellet density a) can not be determined from the given information b) are .15g/cc and .72g/cc c) are .46g/cc and 2.18g/cc d) are .50g/cc and 1.96g/cc e) None of responses a) through d) is a correct completion of the sentence.5 (For questions 11 and 12) Below is part of a JMP report from a "one-way random effects" analysis of a study where an operator used the same gauge to measure the heights of 10 steel punches 3 times apiece. (The data were actually those of student 1 in Table 2.1 of SQAME.) Units used entering the data were .001 inches. 11. In units of .001 inch, 95% confidence limits for the repeatability standard deviation in this context a) are not available based on the given information b) are 0 and 4.02 c) are 0 and 2.01 d) are .64 and 2.29 e) are .80 and 1.51 12. In units of .001 inch, 95% confidence limits for the standard deviation of actual punch heights a) are not available based on the given information b) are 0 and 4.02 c) are 0 and 2.01 d)