An Employee of the Bureau of Transportation Statistics Has Been

question 44

Multiple Choice

An employee of the Bureau of Transportation Statistics has been given the task of estimating the proportion of on-time arrivals of a budget airline. A prior study has estimated this on-time arrival rate as 78.5%. What is the minimum number of arrivals this employee must include in the sample to ensure that the margin of error for a 95% confidence interval is no more than 0.05?

• A) 270
• B) 259
• C) 260
• D) 269

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Definitions:

Offices

Designated workspaces within a building where administrative or professional activities are conducted.

Presence Technology

A type of software or system that allows people to locate and identify a computing device user's current status and location, often used in instant messaging applications.

Cloud Computing

The delivery of computing services—such as servers, storage, databases, networking, software—over the internet ("the cloud") to offer faster innovation, flexible resources, and economies of scale.

Videoconferencing

A technology-based meeting format that allows participants to see and hear each other through video and audio connections, often used for remote communication.