Sam?s Long Life 75-watt light bulbs are designed to have a life of 1,100 hours with toleranSam's...

Question:

Sam's Long Life 75-watt light bulbs are designed to have a life of 1,100 hours with tolerances of 215 hours. The process that makes light bulbs has a mean of 1,000 hours, with a standard deviation of 51 hours. Compute the process capability ratio and the process capability index, and comment on the overall capability of the process.

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Process Capability Index:

Process capability index or process capability ratio is the ability of a process to produce goods and services with the required specification. Is concept it is applied only to the processes where the manufacturing process is in a state of statistical control.

Answer and Explanation:

Compute the process capability ratio and the process capability index by the following way.

USL = 1,100 + 215

USL = 1,315

LSL = 1,100 - 215

LSL =...

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Process Capability: Definition & Elements

from Business 112: Operations Management

Chapter 4 / Lesson 5
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