What Elements Make Up Most of the Body

question 107

Multiple Choice

What elements make up most of the body?

• A) oxygen, nitrogen, helium, calcium, boric acid
• B) oxygen, carbon, melphindium, nitrogen, calcium, phosphorus
• C) oxygen, calcium, gold, phosphorus, nitrogen, gold
• D) oxygen, carbon, hydrogen, nitrogen, calcium, phosphorus

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Definitions:

Sample Mean

The average value obtained from a sample, calculated as the sum of all sampled observations divided by the number of observations.

Standard Deviation

A measure that quantifies the amount of variation or dispersion of a set of data values.

Null Hypothesis

In statistical hypothesis testing, the default assumption that there is no significant difference or effect.

Confidence Interval

A span of numerical values, obtained from sampled data, which is expected to encompass the value of a parameter yet to be known from a population.