Construct An $R$ Chart and Determine Whether the Process Variation Is Within Statistical

question 33

Essay

Construct an $R$ chart and determine whether the process variation is within statistical control.

A machine is supposed to fill cans that contain 12 ounces. Each hour, a sample of four cans is tested; the results of 15 consecutive hours are given below.

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Definitions:

Testing Effect

The phenomenon where the act of retrieving memory (like taking a test) enhances learning and retention more effectively than passive study methods.

Retrieval Practice Effect

An improvement in long-term memory when information is retrieved through testing rather than simply re-reading or reviewing material.

Test-Enhanced Learning

The use of tests or quizzes not only for assessment but as a tool to improve the retention and recall of information.

Full Night's Sleep

The recommended duration of sleep, typically 7-9 hours for adults, required for optimal health and functioning.