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  • Exam Name: Certified Quality Engineer
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CQE Practice Exam Questions with Answers Certified Quality Engineer Certification

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?

A.

The product guarantee takes care of the product.

B.

A warranty is in place on the product.

C.

It is a minor inconvenience.

D.

They don't think it will do any good.

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Question # 7

A normal (Gaussian) distribution curve is

A.

Bell shaped.

B.

Dome shaped.

C.

Pear shaped.

D.

Positively skewed.

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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

A.

2(r)(c)

B.

(r-1)(c-1)

C.

rc-1

D.

2(r-1)(c-1)

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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

CQE question answer

CQE question answer

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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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?

A.

1.22% of the time

B.

5.83% of the time

C.

3.91% of the time

D.

None of the above

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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

A.

Less than the proportion of Ids greater than 0.90

B.

Less than 50 percent.

C.

Less than the proportion with IDs greater than 1.10

D.

Less than the proportion with IDs greater than 1.00

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Question # 12

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

A.

AQL, p-bar

B.

p, n

C.

X-bar and R

D.

R, sigma

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Question # 13

The AQL for a given sampling plan is 1% this means that

A.

The producer takes a small risk of rejecting product which is 1% defective or better.

B.

All accepted lots are 1% defective or better.

C.

All lots are 1% defective or better.

D.

The average quality level of the plan is 1%.

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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?

A.

0.9985

B.

0.01

C.

0.00173

D.

0.00223

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Question # 15

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

A.

The supplier's product-quality history.

B.

The supplier's geographical location.

C.

The supplier's implementation of quality manual procedures.

D.

The supplier's skills in quality control techniques.

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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

A.

20.88 - 24.12

B.

20.42 - 24.59

C.

21.65 - 23.35

D.

17.4 - 27.6

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Question # 17

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

A.

Normal.

B.

Binomial.

C.

Exponential.

D.

The binomial or the hypergeometric distribution.

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Question # 18

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

A.

1.782

B.

2.179

C.

2.064

D.

1.711

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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?

A.

0.3446

B.

0.0228

C.

0.0012

D.

0.0375

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Question # 20

The equation below represents the:

CQE question answer

A.

Lognormal probability density function.

B.

Normal probability density function.

C.

Exponential probability density function.

D.

None of the above.

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