Question

An inspector inspects for scratches in the exterior paint of each of the automobiles being prepared for shipment to dealers. The result of his inspection of cars in 10 days is as follows:
Day.................Flaws
-----------------------------
...1....................4
...2....................6
...3....................7
...4....................8
...5....................14
...6....................7
...7....................3
...8....................2
...9....................3
.10....................6
-----------------------------
Sum.................60

Construct a control chart with for this process to control for number of flaws and indicate if the process was out of control at any time.

- Which of the following charts is appropriate to control the number of flaws?

P Chart

or

C Chart

- Based on your choice on the last question, calculate "one" of the followings: P (for P chart), or C (for C chart)

- If you chose P Chart, how much is standard deviation of p (sigma_p)? (Leave empty if you are not doing P chart)

- Upper Control Limit:

- Lower Control Limit:

- Is the number of flaws in control?

Yes

or

No

Answer 1