In the Formula $\bar { x } \pm z _ { a / 2 } \sigma / \sqrt { n }$

question 75

Multiple Choice

In the formula $\bar { x } \pm z _ { a / 2 } \sigma / \sqrt { n }$ , the $\alpha$ / 2 refers to:

• A)the probability that the sample mean will not equal the population mean.
• B)the probability that the confidence interval will not contain the population mean.
• C)the level of confidence.
• D)None of these choices.

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Definitions:

Wide Area Network

A Wide Area Network (WAN) is a telecommunications network that extends over a large geographical area, connecting computers and smaller networks to each other.

Extranet

A private network that uses Internet protocols and the public telecommunication system to securely share part of a business's information or operations with suppliers, vendors, partners, customers, or other businesses.

Virtual Network

Common type of technology infrastructure, which consists of links that are not wired connections.

Costly Hardware

Expensive physical components of a computer system or other electronic devices.