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ASQ CRE Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Reliability Management | - Risk management and decision analysis - Reliability program planning and management |
| Topic 2: Maintainability and Availability | - Maintainability engineering concepts - Availability modeling and analysis |
| Topic 3: Life Data Analysis and Testing | - Accelerated life testing - Weibull analysis and life data modeling |
| Topic 4: Reliability Engineering Principles | - Reliability modeling and prediction - System reliability evaluation |
| Topic 5: Failure Analysis and Corrective Action | - Root cause analysis and corrective actions - Failure mode and effects analysis (FMEA) |
| Topic 6: Design and Development | - Tolerance analysis and robustness design - Design for reliability |
| Topic 7: Probability and Statistics | - Probability distributions and statistical inference - Regression and data analysis methods |
ASQ Certified Reliability Engineer (CRE) Sample Questions:
1. For equal length missions an increase in the MTBF will yield:
I. An increase in availability.
II. An increase in reliability.
III. A decrease in reliability.
IV. A decrease in availability.
Response:
A) III and IV
B) I
C) I and II
D) III
2. A reliability test was terminated after 171 hours based upon a pre-established plan. An estimate of mean-time-to-failure of 57 hours was obtained. The lower 95 percent confidence bound on the true population mean-time-to-failure is:
Response:
A) 22 hours.
B) 27 hours.
C) 125 hours.
D) 11 hours.
3. All of the following statements concerning statistical inference are true EXCEPT:
Response:
A) Estimation is the process of analyzing a sample result in order to predict the value of the population parameter
B) The confidence interval is normally the statistical tolerance limits of the population parameter.
C) The point estimate is a single value used to estimate the population parameter.
D) The confidence interval is a range of values which may include the true value of a population parameter.
4. The BEST way to set an overall reliability goal is to:
Response:
A) Put down specific numerical requirements for reliability statements of operating environments, and a definition of successful product performance.
B) Insist that the goal be expressed in terms of mean-time-between-failures for all components and assemblies.
C) Indicate who would be at fault if the desired reliability is not obtained during the warranty.
D) Write a specification calling for a product to have high reliability and incorporate it into a contract.
5. Product residual safety risk includes which two of the following?
I. The risk left over after the risk reducing plan is implemented.
II. The risk associated with the selected part.
III. The risk associated with a safety device.
IV. The risk the user introduces when they modify a product.
Response:
A) III and IV
B) II and IV
C) I and III
D) I and II
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: A | Question # 3 Answer: B | Question # 4 Answer: A | Question # 5 Answer: D |

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