Consider a production process that produces batteries. A quality engineer has taken 20 samples each containing 100 batterieslight bulbs. The total number of defective batteriesunits observed over the 20 samples is 1200. The LCL for the control chat constructed using two sigma is
A) 0.001
B) 0.0406
C) 0. 012
D) 0.016

Question

Quizplus · Accepted Answer

The LCL (Lower Control Limit) for a p-chart is calculated using the formula: LCL = p̄ - 2 * sqrt((p̄(1-p̄))/n), where p̄ is the average proportion of defects (1200 defects / 2000 total units = 0.6) and n is the sample size (100). Calculating this gives LCL = 0.0406.

Consider a Production Process That Produces Batteries