2. If a process is deemed to be functioning properly when it is in fact out of c
ID: 335467 • Letter: 2
Question
2.
If a process is deemed to be functioning properly when it is in fact out of control, which of the following is true?
A Type I error has occurred which is the producer's risk.
A Type II error has occurred which is the producer's risk.
A Type I error has occurred which is the consumer's risk.
A Type II error has occurred which is the consumer's risk.
None of the above.
3.
A control chart is used to plot average values of a performance measure over time to determine if the performance mean and variance of the process change.
True
False
a.A Type I error has occurred which is the producer's risk.
b.A Type II error has occurred which is the producer's risk.
c.A Type I error has occurred which is the consumer's risk.
d.A Type II error has occurred which is the consumer's risk.
e.None of the above.
Explanation / Answer
2. The correct answer is option d.
A process is said to be in control when it operate with only chance that the variability in a system exist which may cause variation whereas a process is out of control when it operates under assignable causes like improper machine adjustment, raw material is defective, etc.
Type II error occurs when there is lost opportunity where it is considered the process is in control but is actually not.
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