Total Quality Management

241. In ANOVA, a factor is defined as the:

  1. dependent variable.
  2. independent variable.
  3. Both (a) and (b)
  4. None of these
Correct answer: (A)
independent variable.

242. A 2 X 2 factorial design

  1. is called a one-way ANOVA.
  2. results in a four-cell matrix.
  3. cannot yield interactions.
  4. must include an organismic independent variable.
Correct answer: (B)
results in a four-cell matrix.

243. The critical path method determines the ______________ path from the beginning to the end of the project.

  1. Shortest
  2. Quickest
  3. Longest
  4. Middle
Correct answer: (C)
Longest

244. Two events, A and B, are said to be independent if:

  1. P(A ∩ B) = P(A).P(B)
  2. P(A ∩ B) = P(A) + P(B)
  3. P(A | B) = P(B)
  4. P(B | A) = P(A)
Correct answer: (A)
P(A ∩ B) = P(A).P(B)

245. Which of the following distributions is suitable to model the length of time that elapses before the first employee passes through the security door of a company?

  1. Exponential
  2. Normal
  3. Poisson
  4. Binomial
Correct answer: (A)
Exponential

246. A null hypothesis is rejected if the value of a test statistic lies in the:

  1. Rejection region
  2. Acceptance region
  3. Both (a) and (b)
  4. Neither (a) nor (b)
Correct answer: (A)
Rejection region

247. Smaller p-values indicate more evidence in support of:

  1. the null hypothesis
  2. the alternative hypothesis
  3. the quality of the researcher
  4. further testing
Correct answer: (B)
the alternative hypothesis

248. Analysis of variance is a statistical method of comparing the ______________ of several populations.

  1. standard deviations
  2. variances
  3. means
  4. proportions
Correct answer: (C)
means

249. If the Mean Square Error MSE of an ANOVA for six treatment groups is known, you can compute

  1. degrees of freedom, df1
  2. the standard deviation of each treatment group
  3. the pooled standard deviation
  4. all answers are correct
Correct answer: (C)
the pooled standard deviation

250. In a study, subjects are randomly assigned to one of three groups: control, experimental A, or experimental B. After treatment, the mean scores for the three groups are compared. The appropriate statistical test for comparing these means is:

  1. the correlation coefficient
  2. chi square
  3. the t-test
  4. the analysis of variance
Correct answer: (D)
the analysis of variance
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