A CD Has a Diameter of 12

question 14

Multiple Choice

A CD has a diameter of 12.0 cm.If the CD is rotating at a constant angular speed of 200 revolutions per minute,then the tangential velocity of a point on the circumference is

• A) 1.06 m/s.
• B) 1.26 m/s.
• C) 1.39 m/s.
• D) 1.62 m/s.
• E) 1.32 m/s.

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Definitions:

Hypothesis Testing

A statistical method that uses sample data to evaluate a hypothesis about a population parameter.

Statistical Analyses

The process of applying statistical methods to data in order to summarize, describe, and infer properties of the underlying distribution.

Standard Error

A statistic that measures the accuracy with which a sample distribution represents a population by using the standard deviation.

Confidence Interval

An estimated range of values calculated from the statistics of observed data, indicating where a true parameter of a population is likely to exist with a specified level of certainty.