A Process That Is Assumed to Be in Control with Limits

question 153

Multiple Choice

A process that is assumed to be in control with limits of 89 +/- 2 had sample averages of the following 87.1, 87, 87.2, 89, 90, 89.5, 88.5, and 88. Is the process in control?

• A) Yes
• B) No, one or more averages exceeded the limits.
• C) Not enough information to tell.
• D) No, there is a distinguishable trend.
• E) No, two or more consecutive points are very near the lower (or upper) limit.

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Definitions:

Floodplain Zone

An area of land adjacent to a stream or river which stretches from the banks of its channel to the base of the enclosing valley walls and experiences flooding during periods of high discharge.

Marine Organisms

Living creatures that inhabit the ocean or sea, including both plants and animals.

Nekton

Aquatic animals that can swim and move independently of water currents, including fish, whales, and squids.

Limnetic Zone

The open water area of a freshwater basin (like a lake) where sufficient light penetrates to support photosynthesis, excluding the near shore areas.