A quality analyst wants to construct a sample mean chart for controlling a packaging process.He knows from past experience that the process standard deviation is two ounces.Each day last week,he randomly selected four packages and weighed each.The data from that activity appears below. 
(a)Calculate all sample means and the mean of all sample means.
(b)Calculate upper and lower control limits that allow for natural variations.
(c)Is this process in control?
Definitions:
Negotiating Relationships
The process of discussing and reaching a mutual agreement within personal or professional relationships, aiming to understand and respect different needs and interests.
Androgynous
Possessing or exhibiting both masculine and feminine characteristics; often used in the context of gender identity and roles.
Expressive Traits
Personality attributes that involve external displays of emotions, feelings, and interpersonal communication.
Gender Identity
An individual's personal sense of their own gender, whether that aligns with their biological sex or not.
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