Total Quality Management

181. What is the Sum of Squares of Number of Fertilizers (B)?

  1. 6.075
  2. 39.48
  3. 7.19
  4. 3.89
Correct answer: (C)
7.19

182. What is the degree of freedom of B?

  1. 1
  2. 2
  3. 3
  4. 4
Correct answer: (B)
2

183. A serious problem can occur in multiple regression analysis if an important variable is omitted from the list of independent variables. This can lead to

  1. unbiased least squares estimators.
  2. biased least squares estimators.
  3. a biased estimator of the variance.
  4. All of these
Correct answer: (B)
biased least squares estimators.

184. What does the Adjusted R squared value tells us?

  1. The Adjusted R squared value tells us if there is a positive relationship
  2. The Adjusted R squared value tells us if there is a significant difference
  3. The Adjusted R squared value tells us if there is a significant relationship
  4. The Adjusted R squared value tells us how much of the variance in the dependent variable can be accounted for by the independent variable
Correct answer: (D)
The Adjusted R squared value tells us how much of the variance in the dependent variable can be accounted for by the independent variable

185. ______________ is the set of activities that ensures the quality levels of products and services are properly maintained and that supplier and customer quality issues are properly resolved.

  1. Quality Assurance
  2. Quality Planning
  3. Quality Control
  4. Quality Management
Correct answer: (A)
Quality Assurance

186. The South African government is concerned about the high incidence of HIV/AIDS in South Africa. They wish to estimate the true number of people in South Africa who are HIV positive. A random sample of 5000 people were tested and 1980 of them were HIV positive. What is the parameter of interest?

  1. The number of people in South Africa
  2. The 5000 people sampled
  3. The number of people in South Africa who are HIV positive
  4. The 1980 people sampled who were HIV positive
Correct answer: (C)
The number of people in South Africa who are HIV positive

187. An advertising executive is studying television-viewing habits of married men and women during prime time hours. On the basis of past viewing records, the executive has determined that during prime time, husbands are watching television 40% of the time. It has also been determined that when the husband is watching television, 40% of the time the wife is also watching. When the husband is not watching television, 30% of the time the wife is watching television. Find the probability that the wife is watching television in prime time.

  1. 0.36
  2. 0.35
  3. 0.34
  4. 0.32
Correct answer: (C)
0.34

188. Student's t-test is applicable only when:

  1. n ≤ 30 and σ is known
  2. n > 30 and σ is unknown
  3. n = 30 and σ is known
  4. All of these
Correct answer: (A)
n ≤ 30 and σ is known

189. A result is called "statistically significant" whenever

  1. The null hypothesis is true.
  2. The alternative hypothesis is true.
  3. The p-value is less or equal to the significance level.
  4. The p-value is larger than the significance level.
Correct answer: (C)
The p-value is less or equal to the significance level.

190. The ______________ sum of squares measures the variability of the observed values around their respective treatment means.

  1. treatment
  2. error
  3. interaction
  4. total
Correct answer: (B)
error
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