If there are 40 total defects from 8 samples, each sample consisting of 200 individual items in a production process, which of the following is the fraction defective that can be used in a p-chart for quality control purposes?
A) 2.5
B) 0.25
C) 0.025
D) 0.0025
E) 0.00025

Question

Quizplus · Accepted Answer

To find the fraction defective, we need to divide the total number of defects (40) by the total number of items produced (8 samples x 200 items per sample = 1600 items). This gives us 40/1600 = 0.025, which is equivalent to choice C.

If There Are 40 Total Defects from 8 Samples, Each