QUESTION 3
(i)
(i)
A manufacturer of cardboard boxes wants to implement a sampling plan. The
company manufacturers 17 000 boxes a day. The daily sampling plan to be used is
“n = 200” and “c = 2”.
(A)
With this information construct an “O.C.”. curve, determining the A.Q.L. and
L.Q. if the values for the producers and consumer risk is 5%. (Use a
minimum of seven points when constructing the curve).
(12)
(B)
Graphically determine the A.O.Q.L. value.
(6)
Walkabout Clothing has just secured an order of 17000 jackets for S.A.A. The
company can manufacture 375 jackets per day. Walkabout wants to introduce a
sampling plan to randomly check the quality. The daily agreed sampling to be used
is “n=150” and “c=0”.
A.
With the above information construct an “OC” curve, determining the A.Q.C.
and L.Q.if the value for the producers risk and consumers risk is 5%.
(Use a minimum of seven points when constructing the curve)
B.
Graphically determine the A.O.Q.L. value.
You have an idea that the major problems concerning the engine
mounting is caused by the product supplied to your
for the manufacturing of these brackets. You have iniated a
sampling plan and will develop an “O C Curve” from the information.
The information you want to in the plan is as follows:
Batch size
Sample size
Accepted number of sample “C”
800
320
2
Develop an “OC” curve with the information graphically determining the
“Acceptable Quality level” and limiting quality if alfa () is 5% and
beta (B) is 10%
(12)
(6)