The First Cells Must Have Been Simple, Single-Celled Organisms Similar

question 2

Short Answer

The first cells must have been simple, single-celled organisms similar to modern _______________.

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Definitions:

One-tailed

A type of statistical test that predicts the direction of the expected difference or relationship.

Two-tailed

A test in statistics where the critical area of a distribution is two-sided and tests whether a sample is greater than or less than a certain range of values.

Zero-tailed

Refers to a type of hypothesis test in statistics where the area of interest is on one extreme end of the distribution curve, indicating whether a sample mean is either significantly higher or lower than the population mean.

Random Assignment

The use of random selection to assign research participants to experimental groups.