Professor Kamran wants to assess thenumber of errorsin students' solutions to the 3 assignments in this course. She selects a sample of 10 students and recorded their number of errors as follows:

Student1 2 3 4 5 6 7 8 9 10

Errors9 8 8 6 8 6 7 9 1 7 5

a) Determine the centerline and the control limits for the appropriate chart accurate toat least 2 decimal places.

1. Centreline =
2. LCL =
3. UCL =

b) Is the number of errors within statistical control?

• No. There is no point beyond the control limits.
• Yes. There is no point beyond the control limits.
• Yes. There is at least one point beyond the control limits.
• No. There is at least one point beyond the control limits.