(I the Standard Error of the Mean Is the Standard

question 26

Multiple Choice

(i. The standard error of the mean is the standard deviation of the sampling distribution of the
Sample means.
(ii. The standard deviation of the sampling distribution of the mean is always smaller than the
Standard deviation of the population under study.
(iii) For a sampling distribution of the means, 90% of the means would be between ± 1.96 standard
Deviations.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Permafrost

A dense layer of soil under the surface that stays frozen all year long, primarily found in regions near the poles.

Tundra Soils

Soil found in tundra biomes, characterized by permafrost, low temperatures, and minimal nutrient content, affecting vegetation and overall ecosystem productivity.

Moderate Weather

Climatic conditions characterized by mild temperatures and average rainfall, neither too hot nor too cold, often considered comfortable weather.

Biodiversity

The variety and variability of life on Earth, including the diversity within species, between species, and of ecosystems.