The Specification for a Plastic Liner for Concrete Highway Projects

question 117

Essay

The specification for a plastic liner for concrete highway projects calls for a thickness of 6.0 mm ± 0.1 mm. The standard deviation of the process is estimated to be 0.02 mm. What are the upper and lower specification limits for this product? The process is known to operate at a mean thickness of 6.03 mm. What is the C_p and C_pk for this process? About what percent of all units of this liner will meet specifications?

---

Definitions:

Parathyroid Glands

Small endocrine glands in the neck that produce parathyroid hormone, which regulates calcium levels in the blood and bone.

Pineal Gland

A small endocrine gland in the brain that produces the hormone melatonin, involved in regulating sleep-wake cycles.

Melatonin

A hormone secreted by the pineal gland that plays a role in setting circadian rhythms.

Biological Rhythms

Natural processes that cyclically change over a period of time in living organisms, such as the circadian rhythm or menstrual cycle.