For a process to be capable,it must have a capability ratio of at least 1.00.A ratio of 1.00 implies that what percent of the output of a process can be expected to be within the design specification limits?
A)66.67%
B)73.33%
C)95.54%
D)99.74%
E)100%

Question

Quizplus · Accepted Answer

A capability ratio of 1.00 means that the process is capable of producing output within the design specification limits 99.74% of the time. This is because a capability ratio of 1.00 corresponds to a process standard deviation that is equal to 1/3 of the specification width. Using statistical tables or software, it can be calculated that this corresponds to a percentage of 99.74% within the specification limits.

For a Process to Be Capable,it Must Have a Capability