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GAQM CLSSBB Exam
Certified Lean Six Sigma Black Belt (CLSSBB) (Page 3 )

Updated On: 26-Jan-2026
Page 3 of 53
PDF with 300 Questions

Which of these might contribute to similar distributions having Unequal Variance?

  1. Extreme tails
  2. Outliers
  3. Multiple Modes
  4. All of the above

Answer(s): D



A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. Select the answer that best states the Practical Problem.

  1. If the average cost per component is $4,200 or less, then the purchase manager will introduce the new product upgrade with new components
  2. If the average cost per component is greater than $4,200, then the purchase manager will introduce the new product upgrade with new components
  3. Only if the average cost per product upgrade is $4,060, will the purchase manager introduce new product upgrades with new components
  4. If the average cost per new product upgrade is less than $180, then the purchase manager will introduce the new product upgrade with new components

Answer(s): C



A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. The Alternative Hypothesis in the above example is?

  1. The Standard Deviation is equal to $300
  2. The Mean is less than $4,320
  3. The Mean is equal to $4,060
  4. The Mean is less than $4,200
  5. The Mean is greater than $ 4,200

Answer(s): E



A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $2,800 in order to stay within budget. Using a sample of 55 first article components, a Mean of the new product upgrade price of $2,240 and a Standard Deviation of $120 was estimated. Based on the data provided, the Z value for the data assuming a Normal Distribution is?

  1. 2.33
  2. 4.67
  3. 6.48
  4. 8.28

Answer(s): B



A Belt working in a supply chain environment has to make a decision to change suppliers of critical raw materials for a new product upgrade. The purchasing manager is depending on the Belt’s effort requiring that the average cost of an internal critical raw material component be less than or equal to $4,200 in order to stay within budget. Using a sample of 35 first article components, a Mean of the new product upgrade price of $4,060, and a Standard Deviation of $98 was estimated. In order to increase the Long Term Z value to 4, what is the maximum long term variation in pricing the Belt can accept for his upgraded critical raw material component?

  1. $20
  2. $35
  3. $70
  4. $110

Answer(s): B



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