Chocolate Inc manufactures 4 ounce chocolate bars Random sam

Chocolate, Inc. manufactures 4 ounce chocolate bars. Random samples of size four were taken and weighed. Eight hours of observation provided the following data Find the UCL for the R chart. Find the LCL for the R chart. Is this chart in control? Why/why not. Find the UCL for the -chart.. Find the LCL for the -chart. Is this process in control? Why/why not