The Recommended Dietary Allowance (RDA) for Vitamin a Is Expressed

question 29

Multiple Choice

The Recommended Dietary Allowance (RDA) for vitamin A is expressed in:

• A) milligrams (mg).
• B) micrograms (mcg).
• C) beta-carotene equivalents.
• D) vitamin equivalents.

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Definitions:

Chi-square Statistic

A measure used in statistics to assess how expectations compare to actual observed data, especially in categorical data analysis.

Significance Level

The probability threshold below which the null hypothesis is rejected, often denoted by alpha.

Level of Significance

In statistical hypothesis testing, it is the criterion used for deciding whether to reject the null hypothesis, often represented by alpha (α) and set before the study.

Significant Results

Findings in research that are unlikely to have occurred by chance alone, indicating a notable difference or effect that is statistically significant.