I am on a timer please answer all questions

1. "Most process gains are achieved by either reducing the variation in the Blank 1, the Blank 2, or both."

2. "Whatever training model you use, the training, once completed, must be evaluated using a Blank 1 done at manufacturing conditions, like in the TWI format."

3. "For both the product and the process, check each quality characteristic for both Blank 1 and Blank 2; evaluate both. Each can be checked using control charts."

4. There is no substitute for Blank 1 management presence on the production floor.