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Problems 21- 26 are based on the following information: A paper-cutting machine is operating in a...
Problem no.3 The thickness of a metal part is the quality characteristic that statistical process control...
Problem no.3 The thickness of a metal part is the quality characteristic that statistical process control is being applied to. Measurements are taken from 25 subgroups of subgroup size 5. The sum of the X-bar values 1.5735. The sum of the R-values .0231. Xbar/R Chart for x 0636 06396 Subgroup 10 15 20 25 001 0011 a.) Calculate the trial control limits and centerlines for the X-bar and R charts above b.) Calculate the revised control limits and centerlines for...
Question 19 (2 points) (19-20) The Johnson Company produces a lift truck. A metal rod is...
Question 19 (2 points) (19-20) The Johnson Company produces a lift truck. A metal rod is one of the most important components. To check its quality, five samples were taken during four successive days and then the length of each unit was measured. The results are in the following table. Table for factors for control limits is also given. The company needs to determine whether the process is stable using process mean chart and process variation chart. Sample 1 Sample...
I. Given the following table of coating weights for samples of size n-4: (a) Calculate the x 's a...
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I. Given the following table of coating weights for samples of size n-4: (a) Calculate the x 's and R's for samples 2 through & (b) Calculate the X and R values for all cight samples (c) Determine the appropriate constants that would be used with this data to constructx and R control charts, and calculate the control limits Range 18.5 17.9 19.6 22.2 16.5 19.0 2021.2 20.5 20.3 18.90 19.8 20.4 22.8 19.0 20.7 22.2 20.5...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13. To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER READINGS (IN OHMS) 1 1000...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13. To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER READINGS (IN OHMS) 1 992...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13 To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER NOEM READINGS (IN OHMS) 1000...
A pizza restaurant monitors the size (measured by the diameter) of the 10-inch pizzas that it...
A pizza restaurant monitors the size (measured by the diameter) of the 10-inch pizzas that it prepares. Pizza crusts are made from doughs that are prepared and prepackaged in boxes of 15 by a supplier. Doughs are thawed and pressed in a pressing machine. The toppings are added, and the pizzas are baked. The wetness of the doughs varies from box to box, and if the dough is too wet or greasy, it is difficult to press, resulting in a...
lo Data were collected on a quantitative measure with a subgroup size of five observations. Thirty...
lo Data were collected on a quantitative measure with a subgroup size of five observations. Thirty subgroups were collected, with x = 48.42 and R=4.5. Complete parts a through c below. Click the icon to view a table of control chart factors. a Determine the Shewhart factors that will be needed if x-and R-charts are to be developed. The Shewhart factor for the x-chart is Az = (Round to three decimal places as needed.) The Shewhart factors for the R-chart...
Problem 10-25 Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is...
Problem 10-25 Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13 To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER 1 2 3...
Problem no.3 The thickness of a metal part is the quality characteristic that statistical process control is being applied to. Measurements are taken from 25 subgroups of subgroup size 5. The sum of the X-bar values 1.5735. The sum of the R-values .0231. Xbar/R Chart for x 0636 06396 Subgroup 10 15 20 25 001 0011 a.) Calculate the trial control limits and centerlines for the X-bar and R charts above b.) Calculate the revised control limits and centerlines for...
Question 19 (2 points) (19-20) The Johnson Company produces a lift truck. A metal rod is one of the most important components. To check its quality, five samples were taken during four successive days and then the length of each unit was measured. The results are in the following table. Table for factors for control limits is also given. The company needs to determine whether the process is stable using process mean chart and process variation chart. Sample 1 Sample...
all in one
I. Given the following table of coating weights for samples of size n-4: (a) Calculate the x 's and R's for samples 2 through & (b) Calculate the X and R values for all cight samples (c) Determine the appropriate constants that would be used with this data to constructx and R control charts, and calculate the control limits Range 18.5 17.9 19.6 22.2 16.5 19.0 2021.2 20.5 20.3 18.90 19.8 20.4 22.8 19.0 20.7 22.2 20.5...
Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13 To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER NOEM READINGS (IN OHMS) 1000...
A pizza restaurant monitors the size (measured by the diameter) of the 10-inch pizzas that it prepares. Pizza crusts are made from doughs that are prepared and prepackaged in boxes of 15 by a supplier. Doughs are thawed and pressed in a pressing machine. The toppings are added, and the pizzas are baked. The wetness of the doughs varies from box to box, and if the dough is too wet or greasy, it is difficult to press, resulting in a...
lo Data were collected on a quantitative measure with a subgroup size of five observations. Thirty subgroups were collected, with x = 48.42 and R=4.5. Complete parts a through c below. Click the icon to view a table of control chart factors. a Determine the Shewhart factors that will be needed if x-and R-charts are to be developed. The Shewhart factor for the x-chart is Az = (Round to three decimal places as needed.) The Shewhart factors for the R-chart...
Problem 10-25 Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. Use Exhibit 10.13 To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits. SAMPLE NUMBER 1 2 3...
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