Specifications for the density of dustless chalk used in classrooms is 3.5 ± 1.5. (The unit of measure is grams per centimeter²,or g/cm².)A random sample of 100 pieces of chalk was selected and the density of each piece in the sample was recorded.The sample average was equal to 3.6 and the sample standard deviation was equal to 0.75.A histogram of the sample data is given below.

a.How many pieces of chalk in the sample are considered defective (not within the specifications)?
b.Using your response to the above question,what is the dpmo value for this process?
c.According to the concepts of Six-Sigma Quality,what the quality level for this process? (Use the appropriate table provided in the textbook.)

Question

Specifications for the density of dustless chalk used in classrooms is 3.5 ± 1.5. (The unit of measure is grams per centimeter²,or g/cm².)A random sample of 100 pieces of chalk was selected and the density of each piece in the sample was recorded.The sample average was equal to 3.6 and the sample standard deviation was equal to 0.75.A histogram of the sample data is given below.
  
a.How many pieces of chalk in the sample are considered defective (not within the specifications)?
b.Using your response to the above question,what is the dpmo value for this process?
c.According to the concepts of Six-Sigma Quality,what the quality level for this process? (Use the appropriate table provided in the textbook.)

Quizplus · Accepted Answer

The Answer of Specifications for the density of dustless chalk used in classrooms is 3.5 ± 1.5. (The unit of measure is grams per centimeter²,or g/cm².)A random sample of 100 pieces of chalk was selected and the density of each piece in the sample was recorded.The sample average was equal to 3.6 and the sample standard deviation was equal to 0.75.A histogram of the sample data is given below.
  
a.How many pieces of chalk in the sample are considered defective (not within the specifications)?
b.Using your response to the above question,what is the dpmo value for this process?
c.According to the concepts of Six-Sigma Quality,what the quality level for this process? (Use the appropriate table provided in the textbook.)

Specifications for the Density of Dustless Chalk Used in Classrooms