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

-A producer of contact lenses regularly takes samples of 100 lenses and inspects them for scratches. If a lens has a single scratch, it cannot be sold. The results of 10 samples are shown. What is the average proportion defective?
A) 0.012
B) 0.014
C) 0.020
D) 0.028
E) 0.035

Question

Use the following table to answer the question(s) below.
 
-A producer of contact lenses regularly takes samples of 100 lenses and inspects them for scratches. If a lens has a single scratch, it cannot be sold. The results of 10 samples are shown. What is the average proportion defective?
A) 0.012 
B) 0.014 
C) 0.020 
D) 0.028 
E) 0.035

Quizplus · Accepted Answer

To find the average proportion defective, sum the number of defective lenses across all samples and divide by the total number of lenses inspected. If the total number of defective lenses is 14 out of 1000 (10 samples of 100 lenses each), the average proportion defective is 14/1000 = 0.014.

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