Twelve samples, each containing five parts, were taken from a process that produces steel rods at Emmanual Kodzi's factory. T
he length of each rod in the samples was determined. The results were tabulated and sample means and ranges were computed. The results were:
Sample Sample Mean (in.) Range (in.) Sample Sample Mean (in.) Range (in.)
1 11.204 0.033 7 11.201 0.041
2 11.204 0.041 8 11.203 0.034
3 11.189 0.034 9 11.197 0.027
4 11.208 0.051 10 11.201 0.029
5 11.195 0.031 11 11.201 0.039
6 11.197 0.036 12 11.206 0.047
For the given data, the x = nothing inches (round your response to four decimal places).
Based on the sampling done, the control limits for 3-sigma x chart are:
Upper Control Limit (UCLx) = nothing inches (round your response to four decimal places).
Lower Control Limit (LCLx) = nothing inches (round your response to four decimal places).
Based on the x-chart, is one or more samples beyond the control limits? ▼ Yes No .
For the given data, the R = nothing inches (round your response to four decimal places).
The control limits for the 3-sigma R-chart are:
Upper Control Limit (UCLR) = nothing inches (round your response to four decimal places).
Lower Control Limit (LCLR) = nothing inches (round your response to four decimal places).
Based on the R-chart, is one or more samples beyond the control limits? ▼ Yes No .
Sample Sample Mean (in.) Range (in.) Sample Sample Mean (in.) Range (in.)
1 11.204 0.033 7 11.201 0.041
2 11.204 0.041 8 11.203 0.034
3 11.189 0.034 9 11.197 0.027
4 11.208 0.051 10 11.201 0.029
5 11.195 0.031 11 11.201 0.039
6 11.197 0.036 12 11.206 0.047
For the given data, the x = nothing inches (round your response to four decimal places).
Based on the sampling done, the control limits for 3-sigma x chart are:
Upper Control Limit (UCLx) = nothing inches (round your response to four decimal places).
Lower Control Limit (LCLx) = nothing inches (round your response to four decimal places).
Based on the x-chart, is one or more samples beyond the control limits? ▼ Yes No .
For the given data, the R = nothing inches (round your response to four decimal places).
The control limits for the 3-sigma R-chart are:
Upper Control Limit (UCLR) = nothing inches (round your response to four decimal places).
Lower Control Limit (LCLR) = nothing inches (round your response to four decimal places).
Based on the R-chart, is one or more samples beyond the control limits? ▼ Yes No .
1 answer:
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