A company manufactures a product that has a design (nominal) target width of 5 inches with tolerances of + .05 inch. The process that produces the product has a mean of 4.995 inches and a standard deviation of 0.01 inch. The process capability ratio for this process is
A) -1.67
B) -1.5
C) 1.5
D) 1.67

Question

Quizplus · Accepted Answer

The process capability ratio (Cp) is calculated as (USL - LSL) / (6 * standard deviation). Here, USL = 5.05, LSL = 4.95, and standard deviation = 0.01. So, Cp = (5.05 - 4.95) / (6 * 0.01) = 1.67.

A Company Manufactures a Product That Has a Design (Nominal)