Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a
Posted: Sun Jul 03, 2022 5:21 pm
Resistors for electronic circuits are manufactured on ahigh-speed automated machine. The machine is set up to produce alarge run of resistors of 1,000 ohms each. Use Exhibit13.7.
To set up the machine and to create a control chart to be usedthroughout the run, 15 samples were taken with four resistors ineach sample. The complete list of samples and their measured valuesare as follows. Use three-sigma control limits.
a. Calculate the mean and range for theabove samples. (Round "Mean" to 2decimal places and "Range" to the nearest wholenumber.)
b. Determine X=X= and R−R− . (Roundyour answers to 3 decimal places.)
c. Determine the UCL and LCL fora X−X− chart. (Round your answers to 3decimal places.)
d. Determine the UCL and LCLfor R-chart. (Leave no cells blank - becertain to enter "0" wherever required. Round your answers to 3decimal places.)
e. What comments can you make about theprocess?
multiple choice
The process is in statistical control.
The process is out of statistical control.
To set up the machine and to create a control chart to be usedthroughout the run, 15 samples were taken with four resistors ineach sample. The complete list of samples and their measured valuesare as follows. Use three-sigma control limits.
a. Calculate the mean and range for theabove samples. (Round "Mean" to 2decimal places and "Range" to the nearest wholenumber.)
b. Determine X=X= and R−R− . (Roundyour answers to 3 decimal places.)
c. Determine the UCL and LCL fora X−X− chart. (Round your answers to 3decimal places.)
d. Determine the UCL and LCLfor R-chart. (Leave no cells blank - becertain to enter "0" wherever required. Round your answers to 3decimal places.)
e. What comments can you make about theprocess?
multiple choice
The process is in statistical control.
The process is out of statistical control.