The Beginnings of the Nervous System Develop _____ Days After

question 17

Multiple Choice

The beginnings of the nervous system develop _____ days after conception.

• A) 7
• B) 10
• C) 18
• D) 21
• E) 28

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Definitions:

Contingency-table Test

A statistical test used to determine whether there is a significant association between two categorical variables.

Expected Cell Frequency

In the context of a contingency table, it is the number of observations expected in a cell based on the hypothesis being tested.

Chi-square Test of Independence

The Chi-square Test of Independence is a statistical test used to determine if there is a significant relationship between two categorical variables.

Degrees of Freedom

The number of independent values or quantities which can be assigned to a statistical distribution or to a system without violating any constraint.