I neeed help please!!

23. A) Is it always better to add an out-of-control criteria to your control chart? Why or why not? Mention the relevant vocabulary term in your answer [6 points] B) True or False: A single x-bar can only be used to form a single out-of-control signal. [3 points] Just answer True or False for full credit. Q4. The answers to the two questions below are NOT x-bar chart or s chart. [6 points for each answer.] "Looks like Bob is drinking on the job again. I saw that the defects at his station are much higher than everybody else's. I was looking at the... " 'Defects are pretty uniform across the plant but management wants the overall defect rate down. Looks like we are going to have to figure this out using a....."