show full steps and answers please

5. According to labeling criteria and FDA specifications/tolerances, full sized Snicker bars are supposed to weigh 52.7g3.6g. You and nineteen close friends decide to conduct your own quality experiment by weighing (and then, of course, eating) 20 full sized bars. The individual weights along with the average and standard deviation are shown below for these 20 measurements below. ( 12 points) Find Cpk for this process. What is the highest level of sigma (e.g., 2-sigma, 3-sigma, 4sigma, etc) that the process is meeting