Trinity Hospital in the Philippines has been experiencing an increase in the errors related to the medication administered to patients. Over the course of 30 days, the hospital collected the following data on the number of medication errors per day:

1. What control chart would you use to monitor this process? Why?

2. Construct the appropriate control chart for this process using 3σ control limits.

3. Plot the data and determine whether the process is in control.

Sample Errors per Day Sample Errors per Day Errors per Day Sample 21 11 22 12 13 23 6. 4 10 14 10 24 15 25 4 16 26 27 17 18 9. 28 8. 29 19 30 2 20 10 8.