A retail store charts the number of customer returns per day. Under normal conditions, the store expects 10 customer returns per day

During the past 10 days, the observed customer returns were as follows: 12, 9, 8, 14, 8, 13, 8, 10, 9, 11. Using 99.7% control limits, is the process under control?

The process is in control since 10.2 is within the LCL = 0.51 and UCL = 19.42