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A Company Is Studying the Number of Daily Debit Card

question 8

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A company is studying the number of daily debit card purchases. There were 20 purchases and the probability of a debit card purchase is 0.5. Of the 20 purchases, what is the expected value of the number of debit card purchases?


Definitions:

Drug-Resistant Strains

Bacterial, viral, or other microbial strains that have evolved to resist the effects of drugs designed to kill or inhibit them, often due to misuse or overuse of antibiotics.

Colonies

Groups of individuals of the same species living together, often cooperating and sharing resources, in a collective living situation.

Lassa Virus

A virus that causes Lassa fever, an acute viral hemorrhagic illness, primarily occurring in West Africa.

Phylogeny

The evolutionary history and relationships among individuals or groups of organisms, illustrating their common ancestry.

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