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IE330 Engineering Applications (lesson 1) Flashcards | StudBud

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IE330 Engineering Applications (lesson 1)

8 terms·StudBud Administration

6 questions are included in lesson that overlap with lecture notes; shared before the text is considered more formally.

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Questions 8

Answers

1
4. MTBF would be used instead of MTTF if...
the product is rejected based on a binomial decision
the product has a constant failure rate
the failure is based on a measurable variable rather than an attribute
the product is repairable
2
3. Reliability engineering primarily aims to:
reduce the number of nonconformities
maintain control of processes
improve the useful lifetime of products
improve the reliability of data
3
2 The vertical axis has no label. This axis could represent:
Mean time to failure
Cumulative probability
Availability
Mean time between failures
4
1. Reliability
can be calculated by (1-F(t))... one minus the failure rate
measure of a product part or service to perform intended function
the sample will fall within a confidence interval
All of the listed answers
5
6. On the figure below, the vertical axes have no labels. These axes could represent:
Failure rate
Cumulative probability
Availability
Mean time between failures
6
Failing to reject H₀ when H₀ is true is:
Impossible
Type II Error
No error
Type I Error
7
5. In general the quality engineering function differs from the reliabilityengineering function in that...
reliability engineering uses smaller samples than quality engineering
reliability engineering tends to focus on a longer time frame
quality tends to rely on mathematics and statistics more than reliability
quality engineering places more emphasis on market forces
8
When the sample size is less than ___ , we estimate the population variance, σ², by the sample variance, s².
100
10
40
30