ASQ cqe practice test

Quality Engineer Exam


Question 1

Given the data below, what is the 90% confidence interval for the variance?
22, 23, 19, 17, 29, 25

  • A. 4.21 - 99.07
  • B. 15.32 - 28.66
  • C. 8.27 - 79.88
  • D. 16.87 - 56.52
Answer:

C

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Question 2

An experiment with two factors, in which all levels of one variable are run at each level of the second
variable, is called a

  • A. One-way experiment.
  • B. Latin square experiment.
  • C. Factorial experiment.
  • D. Fractional factorial experiment.
Answer:

C

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Question 3

The primary advantage of the Latin square design, compared to the factorial design, is that

  • A. In most circumstances, it requires less data.
  • B. It eliminates the need for interaction analysis.
  • C. It allows higher significance levels.
  • D. It does not require homogeneity of variance.
Answer:

A

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Question 4

The "least squares method" is used in

  • A. The central limit theorem
  • B. Calculating σ2
  • C. Calculating σ2 and s2
  • D. Calculating a best fit regression line.
Answer:

D

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Question 5

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
Answer:

B

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Question 6

In nonparametric statistics:
. No assumptions are made concerning the distribution from which the samples are taken.

. The parameters of the distribution do not relate to the parameters of the sample.

. The sample and the distribution must have no parameters in common.

  • A. I only
  • B. II only
  • C. III only
  • D. II and III only
Answer:

A

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Question 7

The difference between setting alpha equal to 0.05 and alpha equal to 0.01 in hypothesis testing is

  • A. With alpha equal to 0.05, we are more willing to risk a type I error.
  • B. With alpha equal to 0.05, we are more willing to risk a type II error.
  • C. Alpha equal to 0.05 is a more "conservative" test of the null hypothesis.
  • D. With alpha equal to 0.05, we are less willing to risk a type I error.
Answer:

A

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Question 8

One-way analysis of variance is MOST similar in its objectives to

  • A. A test of a population mean.
  • B. A test for equality of two sample proportions.
  • C. A test for equality of two population means.
  • D. A chi-square test for independence.
Answer:

C

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Question 9

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)
Answer:

B

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Question 10

Which of the following is a valid null hypothesis?

  • A. p > 1/8
  • B. μ < 98
  • C. The mean of population A is not equal to the mean of population B
  • D. mu = 110
Answer:

D

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