For a control chart data having the average sample fraction nonconforming= 0.2313 and the sample size=50, what will be the value of the UCL for the np control chart?Please answer with only T/F or MCQ and I will rate a thumbs up:)

1. The statistical principles underlying the control chart for fraction nonconformingare based on the poisson distribution. (T/F)

2. For a control chart data having the average sample fraction nonconforming= 0.2313 and the sample size=50, what will be the value of the UCL for the np control chart?

A. 2.62

B. 20.51

C. 11.89

D. 11.56

3. It is possible to use fraction of nonconforming (p) control charts for the constant sample size. (T/F)

4. If the fraction nonconforming for 7 samples are 0.11, 0.24, 0.21, 0.14, 0.24, 0.21, 0.17, what is the value for the center line for a p-chart?

A. 0.21

B. 0.12

C. 0.19

D. 0.13

5. Which of these is an advantage of attribute control chart?

A. Mean and variability is obtained directly

B. One quality characteristic is observed at a time

C. Several quality characteristics can be considered jointly

D. Much useful information about the process performance can be gathered