Question

Smith and Johnson Industries has decided to use a p-Chart with 3-sigma control limits to monitor the proportion of defective galvanized pipes produced by their production process. The quality control manager randomly samples 150 galvanized pipes at 16 successively selected time periods and counts the number of defective galvanized pipes in the sample.

Step 1 of 8: What is the Center Line of the control chart? Round your answer to three decimal places.

Step 2 of 8: What value of z should be used to construct the control chart?

Step 3 of 8: What is the Upper Control Limit? Round your answer to three decimal places

Step 4 of 8: What is the Lower Control Limit? Round your answer to three decimal places.

Step 5 of 8: At the next time period, 150 galvanized pipes are sampled and 7 defective galvanized pipes are detected.

Step 6 of 8: At the next time period, 150 galvanized pipes are sampled and 18 defective galvanized pipes are detected.

Step 7 of 8: At the next time period, 150 galvanized pipes are sampled and 29 defective galvanized pipes are detected.

Step 8 of 8: You, acting as the quality control manager, have concluded that the process is "Out of Control". What is the probability that the process is really "In Control" and you have made a Type I Error? Round your answer to three decimal places.

defects, 11,12,9,14,7,14,9,7,12,8,10,9,10,12,14,14

Answer 1

Due to insufficient time , i will not answer(8) bit .

please send the separate question , i will answer it .

Thank you!