The Population of All Sample Proportions Has an Approximately Normal

question 98

Multiple Choice

The population of all sample proportions has an approximately normal distribution if the sample size (n) is sufficiently large.The rule of thumb for ensuring that n is sufficiently large is:

• A)np ≥ 5
• B)n(1 - p)≥ 5
• C)np ≤ 5
• D)n(1 - p)≤ 5 and np ≤ 5
• E)np ≥ 5 and n(1 - p)≥ 5

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Definitions:

GABA

Gamma-aminobutyric acid, a neurotransmitter in the brain that plays a key role in inhibiting nerve transmission, thus reducing neuronal excitability.

Acetylcholine

A neurotransmitter involved in many functions including muscle movement and memory.

Curare

A toxic plant extract used traditionally as an arrow poison and medically to relax muscles during surgery.

Antagonist

A substance that blocks or dampens the action of a neurotransmitter or hormone, or a character in a story who opposes the protagonist, creating conflict.