For a 99% Confidence Interval, You Use the Z Scores

question 30

Multiple Choice

For a 99% confidence interval, you use the Z scores for the middle 99% of the normal curve, which comes out to:

• A)+1.64 and -1.64
• B)+2.58 and -2.58
• C)+3.04 and -3.04
• D)+1.58 and -1.58

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Definitions:

Percent Increase

The ratio, expressed as a percentage, by which a quantity increases relative to its original value.

Net Income

The amount of money left after all expenses, including taxes and costs, are subtracted from total revenues.

Increase

A rise or growth in numbers, value, or amount.

Population

The total number of people inhabiting a particular area or country.