Jennifer's Insurance Company uses quality control methods to assess the service that its agents provide to its customers. Each month, a sample of 200 polices is randomly selected, and each policy is reviewed to determine whether or not it contains an error. The table below shows the number of policies that contained an error over the past thirteen months. SAMPLE 1 2 3 4 5 6 7 8 9 10 11 12 13 Number of policies containing an error 1 2 2 0 2 1 2 0 2 7 3 2 1 a. Determine the upper and lower control limits for the fraction of policies containing an error using two-sigma limits. (Do not round intermediate calculations, and use four decimal places for final answers. Remember the rule about negative LCL's.). UCL LCL b. Is the process in control? Yes No