A computer manufacturer is performing a quality check to make sure the computers and rsquo sound cards are working correctly. The plant manager tested 1000 computers on Monday and found that 4 had def?

The plant manager's quality check revealed that out of 1,000 computers tested, 4 had defective sound cards. This indicates a defect rate of 0.4%, which is relatively low. However, the manufacturer should investigate the cause of these defects to ensure they maintain quality standards and prevent future issues. Continuous monitoring and testing are essential for maintaining product reliability.