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 below: 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 below: 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, we need to add up the number of defective lenses from each sample and divide by the total number of lenses inspected. From the table, we can see that the total number of defective lenses is 14. In 10 samples of 100 lenses each, the producer inspected a total of 1000 lenses. So, the average proportion defective is:

14/1000 = 0.014

Therefore, the best choice is B.

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