Note: There should be 1 or more correct answers in each of the…
Question Answered step-by-step Note: There should be 1 or more correct answers in each of the… Note: There should be 1 or more correct answers in each of the multiple choice questions. 1. For a company making efforts in quality improvement, in general, A) It may rely on statistical process control since SPC is the most effective tool for quality improvement B) It may rely on sampling inspection following industrial standard as this procedure is the most effective tool for quality improvement C) It requires coordinated efforts of the company using quantitative, qualitative and managerial tools for quality improvement D) It must use tightened inspection to monitor production processes E) It should have a complete program that involves statistical tools, management commitment, workforce training, marketing, cost analysis 2. A process with ? =1.0 was in control and an x chart was set. A shift of the process mean took place due to assignable causes. Assuming that the new process mean is at the lower control limit of the original x control chart. In using the same x chart to monitor the shifted process, A) the average number of samples required to detect this shift is about 4 B) the average number of samples required to detect this shift is about 2 C) the average number of samples required to detect this shift is about 370 D) the average number of samples required to detect this shift can be any value between 4 to 25. E) the average number of samples required to detect this shift depends on the sample size 3. To properly conduct the acceptance sampling inspection, the unit(s) of the samples to be inspected A) should be taken randomly B) should be taken following certain consistent pattern C) should be taken with sample sizes always proportional to lot sizes D) should include at least one nonconforming unit E) should be taken according to industry standards 2 4. For different probability distributions often used for statistical quality control, A) Normal distribution can be used to approximate Poisson distribution B) Normal distribution should not be used to approximate Binomial distribution in any case C) A process described by Exponential distribution can also be described by Poisson distribution D) Binomial distribution is often used to approximate Hypergeometric distribution E) Normal distribution should be considered if the process is a combination of numerous processes 5. Considering OC curves used for different acceptance sampling plans A) Type a OC curves should always be used since they are accurate B) Type a OC curves can only be used when lot sizes and sample sizes are similar C) Type B OC curves should be used when lot sizes are much larger than sample sizes D) Type B OC curves should be used when lot sizes are slightly larger than sample sizes E) Type B OC curves should be used when lot sizes are proportional to sample sizes 6. Assume that ????1 is acceptable quality level (AQL), ????2 is lot tolerance percent defective (LTPD), ???? is producer’s risk, ???? is consumer’s risk, N is the lot size. To determine the sample size n and the acceptance number c of a single sampling plan using a Binomial nomograph, the following specific values of parameters are used: A) (??1, 1 ? ??) and N B) (??2, ??) and N C) (??1, 1 ? ??) and (??2, ??) D) (??1, 1 ? ??), (??2, ??) and N E) (??1, ??2) and N 7. Military standard 105E (ANSI/ASQC Z1.4, ISO 2859) sampling procedures for inspection by attributes A) are based on lot tolerance percent defective (LTPD) B) are based on acceptable quality level (AQL) C) are indexed on average outgoing quality limit (AOQL) D) are based on acceptable quality level (AOQL) and lot tolerance percent defective (LTPD) E) were developed originally for mass production 8. In reliability analysis, a system is composed of 3 identical components with 2 out of the 3 units redundant for backup purpose. Let ???????? be the system reliability and ???????? be the component reliability. Then: A) ???? = 3 × ???? B) ???? = 1/3 × ???? C) ???? = ???? × ???? × ???? = ???? ^3 D) ???? = 1 ? ???? ^3 E) ???? = 1 ? (1 ? ????)^3 9. In reliability analysis, a series system is composed of 3 identical components and the system will fail if any one of the 3 components fails. Let ???????? be the system failure rate and ???????? be the component failure rate. Then: A) ???? = ???? × ???? × ???? = ???? 3 B) ???? = 3 × ???? C) ???? = 1/3 × ???? D) ???? = 1 ? ???? ^3 E) ???? = 1 ? (1 ? ????)^3 Engineering & Technology Industrial Engineering INDU 372 Share QuestionEmailCopy link Comments (0)
