High-level computer technology has developed bit-sized microprocessors for use in operating industrial “robots.” To monitor the fraction of defective microprocessors produced by a manufacturing process, 50 microprocessors are sampled each hour. The results for 20 hours of sampling are provided in the table.

a. Construct a control chart for the proportion of defective microprocessors.

b. Locate the center line and upper and lower control limits on the chart. Does the process appear to be in control?

c. Conduct a runs analysis for the control chart. Interpret the result.

Transcribed Image Text:

ROBOTS2 Sample 1 2 3 5 6. 7 8 9 10 Defectives 5 6 7 1 3 5 4 5 Sample 11 12 13 14 15 16 17 18 19 20 Defectives 8 3 1 0 1 1 2 3 3 4. 4,