Total Quality Management

151. For an ideal OC curve the probability of acceptance for lot fraction defective less than .01 is ______________.

  1. Equal to 1
  2. Less than 1
  3. Greater than 1
  4. 0
Correct answer: (A)
Equal to 1

152. Factory A produces 100 pieces of wooden legs used in manufacturing tables in 1 hour. The factory in total works for 3 hours. The quality manager decided to check the quality of the output by measuring the length of the legs (in cms). He decides to collect three samples (one for each hour). The sample size for each sample is fixed at 5. The data collected is present in the following table:

Leg 1 Leg 2 Leg 3 Leg 4 Leg 5
Sample 1 10.2 10.5 9.8 9.7 10.3
Sample 2 10.4 9.9 10.1 10.2 9.8
Sample 3 9.9 9.8 10.2 10.1 10.4

What is the mean and range of leg length in sample 1?

  1. Mean=10.3;Range=.3
  2. Mean=10.1;Range=.8
  3. Mean=10.2;Range=.6
  4. Mean=9.9;Range=.5
Correct answer: (B)
Mean=10.1;Range=.8

153. If we want to detect small process shifts using x bar chart, we should use a sample size of:

  1. Less than 5
  2. 5-10
  3. 10-15
  4. 15-25
Correct answer: (D)
15-25

154. The parameters of s2 chart is specified using:

  1. Normal Distribution
  2. Geometric Distribution
  3. Binomial Distribution
  4. Chi-square distribution
Correct answer: (D)
Chi-square distribution

155. The focal point of all quality control should be:

  1. Price focus
  2. Cost Focus
  3. Customer Focus
  4. Manufacturing Focus
Correct answer: (C)
Customer Focus

156. Failure Mode and Effects Analysis, which prioritizes different sources of error, is used in _________________ stage.

  1. Define
  2. Measure
  3. Improve
  4. Analyze
Correct answer: (D)
Analyze

157. Which of the following is the correct combination of specifications while designing a control chart?

  1. Sample size, Frequency of sampling, specification limit
  2. Sample size, Frequency of sampling, Number of defects
  3. Sample size, Specification limit, process standard deviation
  4. Sample size, Process mean, specification limit
Correct answer: (A)
Sample size, Frequency of sampling, specification limit

158. 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 statistic?

  1. The 5000 people sampled
  2. All the people in South Africa
  3. Impossible to calculate from the given information
  4. The 1980 people sampled who were HIV positive
Correct answer: (D)
The 1980 people sampled who were HIV positive

159. The thickness of aluminum sheet is specified to be of 6±2 mm. The Upper Specification Limit and Lower Specification Limit for the sheet are:

  1. 4mm, 8mm
  2. 8mm, 4mm
  3. 6mm, 8mm
  4. 4mm, 6mm
Correct answer: (B)
8mm, 4mm

160. In case someone is interested in process standard deviation, he should construct the ______________ chart.

  1. X bar
  2. R chart
  3. S chart
  4. None of these
Correct answer: (C)
S chart
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