Each hour, a 10 m2 section of fabric is inspected for flaws. The numbers of flaws

Chapter 10, Problem 8

(choose chapter or problem)

Each hour, a 10 \(\mathrm m^2\) section of fabric is inspected for flaws. The numbers of flaws observed for the last 20 hours are as follows:

38 35 35 49 33 48 40 47 45 46

41 53 36 41 51 63 35 58 55 57

a. Compute the upper and lower \(3\sigma\) limits for a c chart.

b. Is the process in control? If not, when is it first detected to be out of control?

Equation Transcription:

Text Transcription:

m^2

3{sigma}