Defects in the finish of new,custom,automobiles usually require the whole body to be repainted.In one "custom" shop,the percentage of defective finishes has been 2 percent.If a sample size of 10 is taken,what should the 99.7 percent upper control limit be?
A)0.1328
B)0.1085
C)0.0443
D)0.1528
E)None of the above

Question

Quizplus · Accepted Answer

The upper control limit (UCL) for a proportion can be calculated using the formula: UCL = p + z * sqrt(p(1-p)/n), where p is the proportion of defects (0.02), z is the z-value for 99.7% confidence (approximately 3), and n is the sample size (10). Calculating this gives approximately 0.1528.

Defects in the Finish of New,custom,automobiles Usually Require the Whole