Use the following table to answer the question(s) below.

-A manufacturer of FAX machines checks samples of 50 units for functionality at the conclusion of the assembly process. The results of 10 samples are shown. What are the lower and upper 3-sigma control limits?
A) (-0.01, 0.09)
B) (-0.01, 0.00)
C) (-0.01, 0.29)
D) (0.00, 0.09)
E) (0.00, 0.29)

Question

Use the following table to answer the question(s) below.
 
-A manufacturer of FAX machines checks samples of 50 units for functionality at the conclusion of the assembly process. The results of 10 samples are shown. What are the lower and upper 3-sigma control limits?
A) (-0.01, 0.09) 
B) (-0.01, 0.00) 
C) (-0.01, 0.29) 
D) (0.00, 0.09) 
E) (0.00, 0.29)

Quizplus · Accepted Answer

The 3-sigma control limits are calculated using the formula: CL ± 3*(σ/√n), where CL is the center line (mean proportion of defects), σ is the standard deviation, and n is the sample size. Given the context, the correct limits are (0.00, 0.29).

Use the Following Table to Answer the Question(s) Below