monitoring and controlling the number of students dropping every semester
A State university is interested in monitoring and controlling the number of students dropping every semester. The average academic drop in every semester is expected to be around 4 percent. Information about the last 4 semesters is as follows:
Sample # Sample size Number of Drops
1 200 12
2 120 12
3 200 10
4 150 14
Set up appropriate 3-standard deviation control limits for the problem.
Are samples 1-4 under control? Explain.
Complete Answer:
