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- Exam Name: Certified Quality Engineer
- Last Update: Apr 23, 2024
- Questions and Answers: 160
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Question # 6

A product failure in the customer's hands is bad for the company. Why do only 4% of the customers normally file a complaint?

Question # 8

A two-way analysis of variance has r levels for one variable and c levels for the second variable with 2 observations per cell. The degree of freedom for interaction is

Question # 9

The failure rate model above is used to show a typical relationship of many parts between their failure rate and the time in service. The reliability function for period "B" is BEST represented by

Question # 10

A process is in control with a defect rate of 0.2%. A sampling plans calls for 30 items to be selected at random, and for the process to be shut down and corrected if any defects are found. How often will the process be shut down without a change in the defect rate?

Question # 11

Select the incorrect statement from among the following. The IDs of a certain piece of tubing are normally distributed with mean 1.00". The proportion of tubing with IDs less than 0.90 is

Question # 12

When used together for variables data, which of the following pair is the MOST useful in preparing control charts?

Question # 14

A lot is known to be 1.2% defective. Five units are randomly selected from the lot, and the lot is accepted if 1 or fewer defects are found. What is the probability of the lot being rejected?

Question # 15

A pre-award evaluation of a supplier's quality system capability should NOT include consideration of

Question # 16

Given the data below is normally distributed, and the population standard deviation is 3.1, what is the 90% confidence interval for the mean?

22, 23, 19, 17, 29, 25

Question # 17

What distribution is used to determine the OC curve for an attributes sampling plan?

Question # 18

The value for t, when making a two-tailed paired t test, with samples of 13 and alpha =0.05, is

Question # 19

A process is normally distributed with a mean of 200 and a variance of 25. One item is randomly selected, what is the probability of this item having a value greater than 210?