Homework Answers
a)
Answer: Option 2 is correct.
Explanation: The control limits are defined as,
Where,
b)
Answer: Yes, the process is in control for the sample
Explanation: The sample is obtained using the formula,
The sample is within the control limit hence process is in control for the sample.
c)
Answer: No, the process is out of control for the sample
Explanation: The sample is obtained using the formula,
The sample is outside the control limit hence process is out of control for the sample.
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Temperature is used to measure the output of a production process. When the process is in...
Temperature is used to measure the output of a production process. When the process is in...
Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is μ = 123.5 and the standard deviation is σ = 0.3. (a) Compute the upper and lower control limits if samples of size 6 are to be used. (Round your answers to two decimal places.) UCL= LCL= Construct the x chart for this process. A graph shows three horizontal lines. The horizontal axis is labeled Sample Number...
Temperature is used to measure the output of a production process. When the process is in...
Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is p - 124.5 and the standard deviation is o -0.3. (a) Compute the upper and lower control limits if samples of size 6 are to be used. (Round your answers to two decimal places.) UCL - LCL = UCI UCL Construct the chart for this process 125.50+ 125.25 125.00 124.75 124.50 124.25 124.00 123.75 UCL Sample Mean...
Temperature is used to measure the output of a production process. When the process is in...
Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is μ = 126.5 and the standard deviation is σ = 0.4. (a)Compute the upper and lower control limits if samples of size 6 are to be used. (Round your answers to two decimal places.) UCL= LCL= Construct the x bar chart for this process. (b) Consider a sample providing the following data. 126.8 126.2 127.1 126.7 126.4...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. Sample x R 1 95.72 1.0 2 95.24 0.9 3 95.18 0.9 4 95.48 0.4 5 95.46 0.5 6 95.32 1.1 7 95.40 1.0 8 95.44 0.3 9 95.08 0.2 9 10 10 95.50 0.6 11 95.80 0.6 12 95.22 0.2 13 95.60 1.3 14 95.22 0.5 15 95.04...
1st*variability is: in control/out of control 2nd*no samples fall/one/two/more 3rd* in control/out of control The following...
1st*variability is: in
control/out of control
2nd*no samples fall/one/two/more
3rd* in control/out of control
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. X Sample R 1 95.72 1.0 95.24 2 0.9 0.9 95.18 95.42 0.4 4 5 95.46 0.5 95.32 1.1 6 7 95.40 0.9 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12...
1. A production process is designed to fill boxes with an average of 14 ounces of...
1. A production process is designed to fill boxes with an average of 14 ounces of cereal. The population of filling weights is normally distributed with a standard deviation of 3 ounces. a. Calculate the centerline, the upper control limit (UCL), and the lower control limit (LCL) for the x¯x¯ chart if samples of 12 boxes are taken. (Round the value for the centerline to the nearest whole number and the values for the UCL and LCL to 3 decimal...
1- KALI, Inc., manufactures home appliances that are marketed under a variety of trade names. However,...
1- KALI, Inc., manufactures home appliances that are marketed under a variety of trade names. However, KALI does not manufacture every component used in its products. Several components are purchased directly from suppliers. For example, one of the components that KALI purchases for use in home air conditioners is an overload protector, a device that turns off the compressor if it overheats. The compressor can be seriously damaged if the overload protector does not function properly, and therefore KALI is...
A) Set the control limits for the process for the x(bar) chart when the maching is working proper...
round to 3 decimal places ?
A) Set the control limits for the process for the x(bar) chart when the maching is working properly UCL-x-? grams (round to two decimal places) LCL-x grams (round to two decimal places) B) Set the control limits for this process for the R-chart. UCLrgrams (round to two decimal places) LCLr grams (round to two decimal places) Refer to the table Factors for Computing Control Chart Limits (3 sigma) for this problem. Your supervisor, Lisa...
The U Chart versus the C Chart The C chart is used when a single unit...
The U Chart versus the C Chart The C chart is used when a single
unit will be examined for nonconformities at each time point. The U
chart is used when a number of units will be sampled at each time
point, and a per unit average number of nonconformities will be
obtained. U Chart Formulas Suppose we have k samples, each of size
ni. Let Di represent the total number of nonconformities in the i
th sample. Formulas for...
What is a control chart? What are its main features and how is it used? I...
What is a control chart? What are its main features and how is
it used?
I included the definition of a control chart so
there isn't any confusion. Please include an explantion in your own
words.
Control Chart
Assuming production engineers have gotten everything to work
such that the process conforms to specifications (the average of
the process is close to the target value and the variability
[standard deviation] is very small), after that they have to ensure
that the...
Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is p - 124.5 and the standard deviation is o -0.3. (a) Compute the upper and lower control limits if samples of size 6 are to be used. (Round your answers to two decimal places.) UCL - LCL = UCI UCL Construct the chart for this process 125.50+ 125.25 125.00 124.75 124.50 124.25 124.00 123.75 UCL Sample Mean...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. Sample x R 1 95.72 1.0 2 95.24 0.9 3 95.18 0.9 4 95.48 0.4 5 95.46 0.5 6 95.32 1.1 7 95.40 1.0 8 95.44 0.3 9 95.08 0.2 9 10 10 95.50 0.6 11 95.80 0.6 12 95.22 0.2 13 95.60 1.3 14 95.22 0.5 15 95.04...
1st*variability is: in
control/out of control
2nd*no samples fall/one/two/more
3rd* in control/out of control
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data show the temperature in degrees centigrade at five points in time during a manufacturing cycle. X Sample R 1 95.72 1.0 95.24 2 0.9 0.9 95.18 95.42 0.4 4 5 95.46 0.5 95.32 1.1 6 7 95.40 0.9 95.44 0.3 9 95.08 0.2 10 95.50 0.6 11 95.80 0.6 12...
round to 3 decimal places ?
A) Set the control limits for the process for the x(bar) chart when the maching is working properly UCL-x-? grams (round to two decimal places) LCL-x grams (round to two decimal places) B) Set the control limits for this process for the R-chart. UCLrgrams (round to two decimal places) LCLr grams (round to two decimal places) Refer to the table Factors for Computing Control Chart Limits (3 sigma) for this problem. Your supervisor, Lisa...
The U Chart versus the C Chart The C chart is used when a single
unit will be examined for nonconformities at each time point. The U
chart is used when a number of units will be sampled at each time
point, and a per unit average number of nonconformities will be
obtained. U Chart Formulas Suppose we have k samples, each of size
ni. Let Di represent the total number of nonconformities in the i
th sample. Formulas for...
What is a control chart? What are its main features and how is
it used?
I included the definition of a control chart so
there isn't any confusion. Please include an explantion in your own
words.
Control Chart
Assuming production engineers have gotten everything to work
such that the process conforms to specifications (the average of
the process is close to the target value and the variability
[standard deviation] is very small), after that they have to ensure
that the...
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