3 Chocolate Inc manufactures 4 ounce chocolate bars Random s

3. Chocolate, Inc. manufactures 4 ounce chocolate bars. Random samples of size four were taken and weighed. Eight hours of observation provided the following data. Sample Mean Range I 3.92 0.09 2 4.00 0.15 3.89 0.17 4 4.13 0.13 3.82 0.19 6 4.06 0.13 4.15 022 409 0.18 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 -chart. e. Find the LCL for the -chart. f. Is this process in control? Why/why not?

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