I the F Distribution Is Positively Skewed and Its Values

question 79

Multiple Choice

i. The F distribution is positively skewed and its values may range from 0 to plus infinity.
ii. The F distribution's curve is positively symmetrical.
iii. Like Student's t distribution, a change in the degrees of freedom causes a change in the shape of the F 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) All statements are false

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Definitions:

Reserves of a Mineral

Quantities of a mineral that are known to exist with a reasonable degree of certainty and can be recovered economically with the existing technology under current economic conditions.

Earth's Innermost Zone

The Earth's core, which is the central part of the Earth below the mantle, consisting of a solid inner core and a fluid outer core primarily made of iron and nickel.

Smelting

The process of extracting a metal from its ore by heating and melting, often using a chemical reducing agent.

Ore Mineral

Naturally occurring minerals from which metals or minerals of economic value can be extracted profitably.