3. We are interested in seeing if 4-ounce chocolate bars are being accurately created to contain 4-ounces. Random samples of size 6 were taken and weighed. Five hours of observation provided the following data: Sample 1 2 Mean 3.91 4.07 3.85 4.02 3.83 Range 0.10 0.16 0.17 0.19 3 4 5 0.22 a. Find the UCL for the R chart. b. Find the LCL for the R chart. Is this chart in control? Why/why not? d. Find the UCL. for the x-chart. e. Find the LCL for the x-chart. f. Is this process in control? Why/why not