Complex, Invertebrate, Life Forms Are Common as Fossils, Beginning with Marine

question 112

Multiple Choice

Complex, invertebrate, life forms are common as fossils, beginning with marine strata of Cambrian age.How long ago did the Cambrian Period begin?

• A)4.6 billion years
• B)66 million years
• C)541 million years
• D)541 billion years

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Definitions:

False Positive

An error in data testing in which a test result improperly indicates the presence of a condition (such as a disease when it is not present).

Expected Gain

The anticipated value or profit that results from a particular action or decision, often calculated in statistical or financial models.

False Negative

An error in test results in which a positive condition is incorrectly reported as negative.

Discrete Probability Distribution

A statistical distribution that shows the probabilities of outcomes with distinct values.