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Perform the indicated operations.
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Percussion Instruments
Musical instruments that produce sound by being struck, shaken, or scraped, such as drums or cymbals.
Stringed Instruments
Musical instruments that produce sound by vibrating strings, played either by plucking, striking, or using a bow.
Wind Instruments
Musical instruments that produce sound by the vibration of air in a tube; examples include flutes, clarinets, and trumpets.
Nearly Normal Condition
A condition in statistics where a sample distribution approximates a normal distribution, often requisite for certain types of inference.
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