If a Distribution Is Normal with μ = 75 and σ

question 53

Multiple Choice

If a distribution is normal with μ = 75 and σ = 15, then what proportion of the scores will fall between 30 and 120?

• A).3413
• B).6826
• C).9544
• D).9974

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Definitions:

Limestone Layer

A sedimentary stratum composed predominantly of calcium carbonate (CaCO3), often formed from the skeletal remains of marine organisms.

Volcanoes Erupted

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Groundwater Dissolved

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Plate Tectonics

A scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere.