How Many Hours of Sleep Do Adults Over the Age

question 406

Multiple Choice

How many hours of sleep do adults over the age of 50 average?

• A) four
• B) six
• C) eight
• D) ten

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Definitions:

Upper Control Limit

The highest threshold in a control chart in statistical process control, beyond which a process output is considered to be out of control and indicative of a problem to be investigated.

Standard Deviation

An indicator that quantifies how much a dataset is scattered around its mean, demonstrating the distribution range of the data points.

Process Distribution

Represents how the values of a process or system's output are spread or dispersed over a range.

R Charts

Control charts used to monitor the range within samples in order to assess the variability of a process.