Nancy, Inc. manufactures 4 ounce chocolate bars. Random samples of size four were taken and weighed. Eight hours of observation provided the following data.
a. Determine the 3 sigma upper and lower control limits for the x-bar chart.
b. Determine the 3 sigma upper and lower control limits for the R-chart.

Question

Nancy, Inc. manufactures 4 ounce chocolate bars. Random samples of size four were taken and weighed. Eight hours of observation provided the following data.  
a. Determine the 3 sigma upper and lower control limits for the x-bar chart.
b. Determine the 3 sigma upper and lower control limits for the R-chart.

Quizplus · Accepted Answer

The Answer of Nancy, Inc. manufactures 4 ounce chocolate bars. Random samples of size four were taken and weighed. Eight hours of observation provided the following data.  
a. Determine the 3 sigma upper and lower control limits for the x-bar chart.
b. Determine the 3 sigma upper and lower control limits for the R-chart.