Statistical Quality Control Mock Test 9

10%

Question 1 of 10

1. if δ= 0.01, α=0.00135, γ=0.05, and β=0.2, what will be the sample size for the desired values of these?

n=32

n=38

n=2

n=45

Question 1 of 10

Question 2 of 10

2. Which of these charts can be used instead of Shewhart control charts, in the case of small number of subgroups used to construct the charts, which were recommended by Quesenberry?

Q-charts

C-charts

R-charts

P-charts

Question 2 of 10

Question 3 of 10

3. What is the value of the LCL of the acceptance control chart when sample size n and the fraction nonconforming for 1-β probability of rejection are specified?

\(LCL=LSL+\left(Z_γ-\frac{Z_β}{\sqrt{n}}\right)\)

\(LCL=LSL+\left(Z_γ+\frac{Z_β}{\sqrt{n}}\right)\)

\(LCL=LSL-\left(Z_γ+\frac{Z_β}{\sqrt{n}}\right)\)

\(LCL=LSL-\left(Z_γ-\frac{Z_β}{\sqrt{n}}\right)\)

Question 3 of 10

Question 4 of 10

4. What is the upper limit for the EWMA for Poisson data?

UCL=\(μ_0+A_L \sqrt{\frac{λμ_0}{2-λ}\big\{1-(1-λ)^{2i}\big\}}\)

UCL=\(μ_0-A_U \sqrt{\frac{λμ_0}{2-λ}\big\{1-(1-λ)^{2i}\big\}}\)

UCL=\(μ_0-A_L \sqrt{\frac{λμ_0}{2-λ}\big\{1-(1-λ)^{2i}\big\}}\)

UCL=\(μ_0+A_U \sqrt{\frac{λμ_0}{2-λ}\big\{1-(1-λ)^{2i}\big\}}\)

Question 4 of 10

Question 5 of 10

5. Who was the first person to develop the acceptance control charts?

Roy

Freund

Astern

Crowder

Question 5 of 10

Question 6 of 10

6. The mean of the variable measured is replaced by the mean of ________ value in the case of the DNOM chart.

Deviation from normal

Range

Deviation from normal range

Normal value

Question 6 of 10

Question 7 of 10

7. How many approaches can be used to develop the acceptance control charts?

Question 7 of 10

Question 8 of 10

8. The control limits for the p-chart and the standardized p-chart are different.

True

False

Question 8 of 10

Question 9 of 10

9. Which of these is a correct expression for the UCL of the modified control charts when the type I error is not specified?

\(UCL=USL-\left(Z_δ+\frac{3}{\sqrt{n}}\right) \sigma \)

\(UCL=USL-\left(Z_δ-\frac{3}{\sqrt{n}}\right) \sigma \)

\(UCL=USL+\left(Z_δ+\frac{3}{\sqrt{n}}\right) \sigma \)

\(UCL=USL+\left(Z_δ-\frac{3}{\sqrt{n}}\right) \sigma \)

Question 9 of 10

Question 10 of 10

10. “A_L” in the expression of the LCL of EWMA charts for Poisson distribution, is ______

Lower allowance factor

Life Allowance factor

Last Allowance factor

Lower control limit factor

Question 10 of 10