CREDIT CARD COMPANY: After receiving a number of complaints about errors in billing statements, a credit card company decided to monitor its billing statements over a 10 day period using a sample size of 100 customer statements. The number of wrong statements identified each day is shown in the following table. Is the process in control at a two- sigma level? Day 1 2 3 4 5 6 7 8 9 10 # of wrong statements 11 12 10 9 s 7 8 14 2 6 The process is not in control The process is in control There is insufficient data to determine this Its time to change your credit card company