A Touch of Class Catering washes its china in an automatic dishwasher. Each piece is inspected as employees select six 5-piece settings to pack in special boxes for storage and travel. Normally this procedure averages 2 unsatisfactorily cleaned items out of 30. Today, an average of 5 out of 30 were unsatisfactory. Does this suggest that something is wrong in the washing process—that is, does 5 fall outside the control limits for samples of 30?