quality engineering

Multiple Choice (1 point each) The control limits for a U chart are drawn based on which of the following distribution? (A) Binomial (B) Normal (C) Poisson (D) Uniform (E) Central Limited Which of the following can be measured by the variance of sample means? (A) accuracy (B) long-term variation (C) variation within samples (D) total variation (E) precision What is the minimum sample size of the P-chart? (A) 20 (B) 25 (C) 30 (D) 40 (E) 50 Where are Zone A located according to the Western Electric Rules? (A) between y + 10 (B) between p +20 (C) between u +30 (D) between ulo and u +20 (E) between u + 20 and u +30 Probability involving number of defect can be approximated by using a standard normal distribution. The approximation is good when (A) np > 5 and n(1-p) 0.5 and n(1-p) >0.95 (C) n/p > 0.5 and 1/(1-p) 0.5 and (1-p)