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Instruction 7-7 Online Customer Service Is a Key Element to Successful Online

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Instruction 7-7
Online customer service is a key element to successful online retailing.According to a marketing survey,37.5% of online customers take advantage of the online customer service.Random samples of 200 customers are selected.
-Referring to Instruction 7-7,the standard error of all possible sample proportions is ________.


Definitions:

Reverse-Engineers

The process of analyzing a product's system, component, or module to determine how it operates in order to replicate or enhance the object.

Breach of Contract

A violation of any of the agreed-upon terms and conditions of a binding contract without a legitimate legal excuse.

Legally Binding

Describes agreements or contracts that are enforceable by law, where parties are obligated to fulfill their terms.

Express Written Contract

A contract that is explicitly set down in writing and signed by the parties involved, detailing the terms and conditions.

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