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:

Consumer Buy

This term appears to be incomplete or possibly vague without proper context. Providing a specific definition is challenging without more information.

Total Utility Data

Information that represents the total satisfaction received from consuming a particular quantity of goods or services.

Marginal Utility

Marginal utility represents the change in satisfaction or utility that an individual gains from consuming one additional unit of a good or service.

Marginal Cost

The increased cost resulting from manufacturing one extra unit of a product or service.