A Box Contains 20 Widgets, 4 of Which Are Defective $\frac { 1 } { 4845 } ; \frac { 364 } { 969 }$

question 153

Multiple Choice

A box contains 20 widgets, 4 of which are defective. If 4 are sold at random, find the probability that (a) all aredefective (b) none are defective.

• A) \(\frac { 1 } { 4845 } ; \frac { 364 } { 969 }\)
• B) \(\frac { 1 } { 5 } ; \frac { 4 } { 5 }\)
• C) \(\frac { 1 } { 116,280 } ; \frac { 1 } { 29,070 }\)
• D) \(\frac { 1 } { 20 } ; \frac { 1 } { 5 }\)

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Definitions:

Legs

Limbs on animals and humans used primarily for support and movement.

Motor Cortex

A region of the cerebral cortex involved in the planning, control, and execution of voluntary movements.

Diversity of Movements

The range and variety of physical actions and behaviors exhibited by an organism.

Body Area

A specific region or part of the human body.