By How Many Decibels Does the Intensity Level of a Sound

question 71

Multiple Choice

By how many decibels does the intensity level of a sound decrease when you triple your distance from a source of sound?

• A)9.5 dB
• B)4.8 dB
• C)6.0 dB
• D)12 dB
• E)3.0 dB

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Definitions:

Population Proportion

The measure of a particular characteristic's frequency in a defined population.

Research Hypothesis

A statement proposing a potential explanation for a phenomenon or a predicted relationship between variables, typically tested through experimentation or observation.

Null Hypothesis

A hypothesis that assumes no significant difference or relationship between variables in statistical testing.

Critical Value

A point on the scale of a statistical distribution that marks the boundary of an acceptance region for a test of hypothesis.