Evidence Suggests That Complex Multicellular,water-Dwelling Organisms First Appeared on Earth

question 109

Multiple Choice

Evidence suggests that complex multicellular,water-dwelling organisms first appeared on earth

• A) in the early 1920s.
• B) 600 million years ago.
• C) 10 million years ago.
• D) 4 million years ago.
• E) 2 million years ago.

---

Definitions:

Confidence Interval

A series of values, obtained from statistics of a sample, that has a high probability of including the value of an unseen population parameter.

Standard Deviation

A metric that calculates how much a dataset's values deviate or spread out from the average.

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, expressed at a certain confidence level.

Mean

The mean of a collection of numbers, found by summing up all values and then dividing by the total count of those values.