How is process capability measured? • A. By comparing control limits to specification limits • B....
How is process capability measured?
• A. By comparing control limits to specification limits
• B. By creating a ratio between specification limits and control limits relevant to six sigma
• C. By using the Cp formula
• D. All the above
Homework Answers
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How is process capability measured?
• A. By comparing control limits to specification limits
• B....
Question 15 (1 point) The process capability ratio (Cp) of a Six Sigma Program is 2....
Question 15 (1 point) The process capability ratio (Cp) of a Six Sigma Program is 2. (The upper and lower specification limits are each 6σ away from the mean. True False
A key joint in a precision machining process has a lower specification limit of a width...
A key joint in a precision machining process has a lower specification limit of a width of 0.99 mm and an upper specification limit of 1.01 mm. The standard deviation is 0.005 mm and the mean is 1 mm. The company wants to reduce its defect probability and operate a "Six Sigma process." To what level would this company have to reduce the standard deviation in the process to meet this target? Note: A "Six Sigma process" has a process...
Section Two (True/False) Regarding SPC and control charts: 3. Control limits and specification limits are both...
Section Two (True/False) Regarding SPC and control charts: 3. Control limits and specification limits are both provided by the customer. cause variation SPC uses graphed statics to determine if a process has special Control limits for most control charts are set at 2 standard deviations. If a control chart signals special cause variation, the cause will also be known. One should work on reducing common cause variation while eliminating special cause variation. Critical process outputs that are measured on a...
I will rate 4. Suppose that a quality characteristic is normally distributed with specification limits (1.64,...
I
will rate
4. Suppose that a quality characteristic is normally distributed with specification limits (1.64, 1.84). The process standard deviation is 0.1. Suppose that the process mean is 1.71 (a) Determine the natural tolerance limits. (6 pts) (b) Calculate the fraction defective. (6 pts) (c) Calculate the appropriate process capability ratio. (8 pts)
1. How can a process be “in control” but not delivering what the customer wants? What is "process capability”? 2. I...
1. How can a process be “in control” but not delivering what the customer wants? What is "process capability”? 2. If the LCL on a process is much greater than the LSL, will the customer tend to be “happy" or "disappointed” with the the results of this process? Why? 3. A) If Cp = 1.00, what % of good product is the process expected to deliver? Answer B) Complete the following: “A common minimum standard in industry is a Cp...
Lean Six Sigma The Lower Specification Limit is 8.0 seconds 36. Representative data gathered from a process that follow...
Lean Six Sigma
The Lower Specification Limit is 8.0 seconds
36. Representative data gathered from a process that follows a normal distribution shows a mean of 8.2 seconds with a standard deviation of 0.3 seconds. The process has 8.5 seconds as an upper specification limit. What is the process yield? a. Calculate: Cp and Cpk b. How many defects per million opportunities the process produces? (hint: use the Excel spreadsheet given in class) c. What is the Sigma of the...
Which of the following statements is TRUE about capability analyses? A. A higher process capability index...
Which of the following statements is TRUE about capability analyses? A. A higher process capability index means the process has a higher defect probability B. A higher process capability index means the process has a lower defect probability C. A process must have its mean centered in the middle of its tolerance interval in order to perform capability analyse D. A process capability index of 1.33 means that a process has a six sigma capability
A certain process is under statistical control and has a mean value of 130 and a...
A certain process is under statistical control and has a mean value of 130 and a standard deviation of 8. The specifications for the process are: a. USL (upper specification limit) = 150 b. LSL(lower specification limit) =100 a. Calculate the cp and cpk b. Which of these indices is a better measure of process capability and why? c. Assuminng a normal distribution what percentage of output is expected to fall ourside the specification. Why is it important to know...
The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen...
The Money Pit Mortgage Company is interested in monitoring the performance of the mortgage process. Fifteen samples of five completed mortgage transactions each were taken during a period when the process was believed to be in control. The times to complete the transactions were measured. The Money Pit Mortgage Company made some changes to the process and undertook a process capability study. The following data were obtained for 15 samples of size 5. Based on the individual observations, management estimated...
6) For the process to be capable of meeting design specifications the process capability index must...
6) For the process to be capable of meeting design specifications the process capability index must be a- less than one (1.0) b- greater than one (1.0) c less than zero (0.0) d- greater than zero (0.0) 7) We are monitoring a process that has an outcome that is normally distributed with a mean of 100 and a standard deviation of 10. We would use a (n)----- -- to evaluate whether this process's average is remaining in control. a- x-bar...
Question 15 (1 point) The process capability ratio (Cp) of a Six Sigma Program is 2. (The upper and lower specification limits are each 6σ away from the mean. True False
Section Two (True/False) Regarding SPC and control charts: 3. Control limits and specification limits are both provided by the customer. cause variation SPC uses graphed statics to determine if a process has special Control limits for most control charts are set at 2 standard deviations. If a control chart signals special cause variation, the cause will also be known. One should work on reducing common cause variation while eliminating special cause variation. Critical process outputs that are measured on a...
I
will rate
4. Suppose that a quality characteristic is normally distributed with specification limits (1.64, 1.84). The process standard deviation is 0.1. Suppose that the process mean is 1.71 (a) Determine the natural tolerance limits. (6 pts) (b) Calculate the fraction defective. (6 pts) (c) Calculate the appropriate process capability ratio. (8 pts)
1. How can a process be “in control” but not delivering what the customer wants? What is "process capability”? 2. If the LCL on a process is much greater than the LSL, will the customer tend to be “happy" or "disappointed” with the the results of this process? Why? 3. A) If Cp = 1.00, what % of good product is the process expected to deliver? Answer B) Complete the following: “A common minimum standard in industry is a Cp...
Lean Six Sigma
The Lower Specification Limit is 8.0 seconds
36. Representative data gathered from a process that follows a normal distribution shows a mean of 8.2 seconds with a standard deviation of 0.3 seconds. The process has 8.5 seconds as an upper specification limit. What is the process yield? a. Calculate: Cp and Cpk b. How many defects per million opportunities the process produces? (hint: use the Excel spreadsheet given in class) c. What is the Sigma of the...
6) For the process to be capable of meeting design specifications the process capability index must be a- less than one (1.0) b- greater than one (1.0) c less than zero (0.0) d- greater than zero (0.0) 7) We are monitoring a process that has an outcome that is normally distributed with a mean of 100 and a standard deviation of 10. We would use a (n)----- -- to evaluate whether this process's average is remaining in control. a- x-bar...
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