A Noisy Workplace Has a Noise Level of 90 DB

question 38

Multiple Choice

A noisy workplace has a noise level of 90 dB.You want to reduce this to a more comfortable 75 dB.By what factor must the power of the noise source be reduced? (That is,what is the ratio of the new power to the old?)

• A)0.83
• B)0.67
• C)0.32
• D)0.032
• E)0.010

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Definitions:

Coincidental Occurrence

An event or circumstance that occurs at the same time by chance but without any causal connection.

Illusory Correlation

The perception of a relationship between two variables even when no such relationship exists, often due to cognitive biases.

Predictive Accuracy

The degree to which a forecast or prediction correctly anticipates future events or outcomes.

Random Assignment

A method used in experiments where participants are allocated to different groups in a way that ensures each has an equal chance of being assigned to any group, reducing bias.