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Statistical Quality Control
Statistical Quality Control Objective
Quiz 1
Solution
Q.1.
Which of the error probability does the acceptance control chart take into account?
a) Type I
b) Type II
c) Neither of the type I not the type II
d) Both, type I and type II
Q.2.
How many approaches can be used to develop the acceptance control charts?
a) 2
b) 1
c) 4
d) 5
Q.3.
When n, γ, and β are specified, the values of control limits are between ________
a) μL And μU
b) LSL And μU
c) μL And USL
d) μL And LSL
Q.4.
When the values of n, δ, and α, are specified, the LCL of the acceptance control charts, lie in between ________
a) μL And USL
b) μL And LSL
c) USL And μU
d) LSL And μU
Q.5.
When the values of δ and α are specified instead of the β and γ, what is the position of UCL of the acceptance control charts?
a) Between USL and μU
b) Between LSL and μU
c) Between μL and USL
d) Between μL and LSL
Q.6.
if δ= 0.α=0.γ=0.and β=0.what will be the sample size for the desired values of these?
a) n=38
b) n=2
c) n=32
d) n=45
Q.7.
Modified control chart design is not based upon ____________
a) Type I error probability
b) Sample size n
c) Type II error probability
d) Process fraction nonconforming
Q.8.
2-sigma limits are recommended for the modified control charts. Which of these is not one of the reasons for this?
a) The spread must be low
b) The limits must be greater than the spread
c) Gives smaller β-risk
d) Gives higher β-risk
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