Four Samples of Three Observations Each Have Been Taken,with Actual

question 7

Essay

Four samples of three observations each have been taken,with actual measurements (in centimetres)shown below.Construct three sigma mean and range charts,and determine if corrective action is needed.
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Definitions:

Brand Image

The public's perception and emotional appeal of a brand as a result of its branding efforts, which may include product experience, advertising, design, and media portrayal.

Endorsement Deal

A contractual agreement where a brand pays an individual to use, promote, and recommend its products or services, often leveraging the individual's fame or expertise.

Jeremy Lin

A professional basketball player known for his success and significant impact in the NBA, particularly during the "Linsanity" period with the New York Knicks.

Specific Attributes

Particular characteristics or qualities that distinguish objects, individuals, or concepts from others within a group or category.