I the Shape of the Chi-Square Distribution Depends on the Size

question 75

Multiple Choice

i. The shape of the chi-square distribution depends on the size of the sample.
ii. Small differences between observed and expected frequencies are due to chance.
iii. The chi-square distribution with large degrees of freedom approaches a normal distribution.

• 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:

Sewage

Wastewater that typically contains contaminants and is produced by residential, industrial, and commercial establishments, requiring treatment before being released into the environment.

Natural Extinction

The process by which species become extinct due to natural factors such as environmental changes, loss of habitat, or failure to adapt to competition.

Tropical Rain Forests

Diverse ecosystems located around the Earth's equator characterized by high annual rainfall, constant warm temperatures, and a vast variety of plant and animal life.

Deforestation

The large-scale removal of forest or tree cover, often to make land available for agricultural, urban, or other types of development, leading to ecological imbalances.