A study was conducted to determine which taxi company gives quicker service.Companies A and B were each called at 50 randomly selected times.The response times were recorded.The results were as follows. 
Definitions:
Interpersonal Level
Pertaining to or involving relationships between individuals.
Grapevine Communication
Informal channels of information exchange within an organization or group, not sanctioned by official communication policies, which can spread rumors and unofficial news.
Downward Communication
The flow of information from higher levels of organizational hierarchy to lower levels, typically from management to employees.
Formal Communication Network
An established system of information exchange within an organization, utilizing formal channels and protocols.
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