The Reliability of a New Model of CD Player Can

question 71

Multiple Choice

The reliability of a new model of CD player can be described by the exponential function R(t) = 2.7-(1/3) t, where the reliability R is the probability (as a decimal) that the CD player is still working t years after it is manufactured. Round the answer to the nearest hundredth. Then write your answer as a percent.
-What is the probability that the CD player will still work 5 years after it is manufactured?

• A) 1%
• B) 94%
• C) 19%
• D) 7%

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Definitions:

Army Alpha

A historic group intelligence test developed for the U.S. military during World War I to assess the mental ability of recruits.

Mental Test

An assessment tool designed to measure intellectual capabilities, cognitive functions, and mental skills.

Psychological Laboratories

Facilities specially designed for conducting research and experiments in psychology.

Reaction Time

The amount of time it takes for an individual to respond to a stimulus, often used in psychological and physiological testing.