A Company Is Studying the Number of Daily Debit Card

question 94

Short Answer

A company is studying the number of daily debit card purchases. If there were 20 purchases and the probability of a debit card purchase is 0.5. What is the standard deviation of the number of debit card purchases? ____

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Definitions:

Renewable Resources

Resources that can be replenished naturally over time, such as solar and wind energy.

Natural Processes

The naturally occurring events and phenomena that shape the Earth's ecology and environment.

Human Time Scale

A concept referring to time periods relevant to human life and history, contrasting with geological or cosmic scales of time.

Economic Development

The process by which a nation improves the economic, political, and social well-being of its people, often measured by increases in income, education, and health.