PLEASE SHOW WORK SO I UNDERSTAND THIS: I am interested in looking at the MPG for different brands of cars to see if they are consistently the same.

                  a. Find the UCL for the R chart.

                  b. Find the LCL for the R chart.

                  c. Is this chart in control? Why/why not?

                  d. Find the UCL for the x̄-chart

                  e. Find the LCL for the x̄-chart

                  f. Is this process in control? Why/why not?

I am interested in looking at the MPG for different brands of cars to see if they are consistentlythe same. Random samples of size ten were taken and produced the following data:Sample Average...