The Annual Incomes of All MBA Degree Holders Working in Los

question 16

Multiple Choice

The annual incomes of all MBA degree holders working in Los Angeles have a bell-shaped distribution with a mean of $71,000 and a standard deviation of $8,000.According to the empirical rule,the percentage of MBA degree holders working in Los Angeles who have an annual income of $63,000 to $79,000 is approximately:

• A)86%
• B)68%
• C)64%
• D)89%

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Definitions:

Spirogyra

A genus of filamentous green algae known for its spiral chloroplasts and its role in freshwater ecosystems.

Agar

Agar is a gelatinous substance derived from red algae that is used as a growth medium in microbiological work, as well as a thickener in food products.

Red Algae

Marine photosynthetic protists with a notable abundance of phycobilin pigments; includes coralline algae of coral reefs.

Protozoans

Diverse group of unicellular eukaryotic organisms, often considered as "animal-like" protists, that inhabit water or soil.