Random Samples of Four Items Are Selected from a Manufacturing

question 10

Multiple Choice

Random samples of four items are selected from a manufacturing process at regular intervals and a certain quality characteristic is measured. After 25 samples,ΣX = 15,350 and ΣR = 411.4. To construct a mean chart,what is the value for R-bar used to compute the limits?

• A)411.4
• B)614
• C)16.46
• D)102.88

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Definitions:

Roles

The expected behaviors, duties, and activities assigned to an individual based on their status or position in a social unit or structure.

Proficient

Describes having a high degree of competence or skill in a particular activity or field, often as a result of practice and learning.

Multiple Roles

Refers to the various roles an individual may play simultaneously in society, such as being a parent, employee, and student.

Marriage Rates

The number of marriages within a given population size or group per unit of time, typically expressed as marriages per year per 1,000 people.