If a Person Has the Inability to See Even at 20

question 8

Multiple Choice

If a person has the inability to see even at 20 feet what a typical person can see at 200 feet (20/200) after correction,this is known as

• A)blindness.
• B)partial sightedness.
• C)legally blind.
• D)impairment.

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Definitions:

Aqueous Acid

An acid solution in which water is the solvent, capable of donating protons (H+ ions) in a reaction.

Sample Proportion

The fraction of individuals in a sample with a particular characteristic or trait.

Large-Sample Method

Statistical techniques that assume the sample size is large enough to rely on the normal distribution as an approximation for the distribution of sample statistics.

Relative Risk

A measure in epidemiology that compares the risk of a certain event occurring in one group versus another.