Matrix Enterprises manufactures molded plastic chairs of various sizes and colors using the blow molding process. However, due to improper maintenance, defects have been steadily increasing. The following results are obtained from a random examination of 10 samples:

a. Assuming 10 observations are adequate for this purpose, determine the three-sigma control limits for defects per chair.
b. What conclusions can be drawn about the process if the next output being examined has 15 defects?

Transcribed Image Text:

Chair 1 2 3 Defects 8 4 6