A Quality Analyst Wants to Construct a Sample Mean Chart

question 22

Multiple Choice

A Quality Analyst wants to construct a sample mean chart for controlling a packaging process.He knows from past experience that whenever this process is under control,package weight is normally distributed with a mean of twenty ounces and a standard deviation of two ounces.Each day last week,he randomly selected four packages and weighed each with the following results: If he uses upper and lower control limits of 23 and 17 ounces,on what day(s) ,if any,does this process appear to be out of control?

• A)Monday
• B)Tuesday
• C)Monday and Tuesday
• D)Monday,Tuesday,and Thursday
• E)The process is in control

---

Definitions:

Relaxation

A state of reduced tension, stress, and mental and physical calm.

Medical etiology

The study or understanding of the causes or origins of diseases.

Biopsychosocial etiology

A framework that explains illness and disorders as the outcome of a combination of biological, psychological, and social factors.

Comorbidity

The presence of one or more additional diseases or disorders co-occurring with a primary disease or disorder in the same individual.