What Sample Size Is Needed to Estimate with 95 Percent

question 98

Multiple Choice

What sample size is needed to estimate with 95 percent confidence the mean intake of calcium within 20 units of the true mean if the intake is normal with a variance of 1900 units?

• A)34,671
• B)187
• C)32
• D)19

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Definitions:

Comorbid Personality Disorders

The occurrence of two or more personality disorders simultaneously within the same individual.

Onset

The beginning or start of something, often used in the context of diseases to denote the time symptoms first appear.

FDA Black Box Warning

The strongest warning by the U.S. Food and Drug Administration indicating that a medication carries a significant risk of serious or even life-threatening adverse effects.

Suicidal Symptoms

Signs that an individual is thinking about, planning, or has a high risk of attempting suicide, including expressing feelings of hopelessness or taking risks that could lead to death.