AAA Co Operates Distribution Centers in the Midwest

question 28

Short Answer

AAA Co. operates distribution centers in the Midwest. Three of their centers were recently audited to determine if they are in compliance with company standard billing procedures. According to the auditing firm, a billing had an equal probability of being from each of the three centers. A random sample of the audited billings had the following distribution.
Center 1: 385 billings
Center 2: 305 billings
Center 3: 210 billings
What is the critical value at α = .01 to test the null hypothesis (equal billings from each center)?

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Definitions:

Enteric Nervous System

A part of the nervous system that directly controls the gastrointestinal system, functioning independently of the central nervous system.

CNS

CNS, or Central Nervous System, refers to the complex part of the nervous system consisting of the brain and spinal cord, responsible for processing and sending out signals.

Serotonin

A neurotransmitter involved in regulating mood, appetite, and sleep.

Motility

The ability of an organism or fluid to move spontaneously and actively, consuming energy in the process.