If Selecting Samples of Si $\mathrm { n } > 30$

question 27

Multiple Choice

If selecting samples of si $\mathrm { n } > 30$ from a population with a known mean and standard deviation,what requirement, if any, must be satisfied in order to assume that the distribution of the sample means is a normal distribution?

• A) None; the distribution of sample means will be approximately normal.
• B) The population must have a normal distribution.
• C) The population must have a standard deviation of 0.
• D) The mean must be equal to the standard deviation.

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Definitions:

Genetic Variation

The diversity in gene frequencies within a population, which is the raw material for evolution.

Hardy-Weinberg Equilibrium

The Hardy-Weinberg Equilibrium is a principle that states the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

Reproducing Flies

Insects of the order Diptera, which have a high reproductive rate, contributing to their role as both pests and ecological agents.

Population Structure

The occurrence of populations that are subdivided by geography, behavior, or other influences that prevent individuals from mixing completely. Population subdivision leads to deviations from Hardy-Weinberg predictions.