If the Intensity Level at Distance D of One Trombone

question 13

Multiple Choice

If the intensity level at distance d of one trombone is 70 dB,what is the intensity level of 76 identical trombones,all at distance d?

• A) 146 dB
• B) 89 dB
• C) 5320 dB
• D) 76 dB
• E) 82 dB

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Definitions:

Correlation Coefficients

A measure that indicates the extent to which two variables change together, ranging from -1 to 1, where 1 means perfect positive correlation, and -1 means perfect negative correlation.

Diversification Benefits

The reduction in investment risk that is achievable by holding a variety of different investment instruments that have low correlation with each other.

Characteristic Line

A line generated in a statistical chart that shows the relationship between the returns on a security or portfolio and the returns on the overall market.

Market Index

A statistical measure that tracks the performance of a group of stocks, representing a portion of the overall market.