If the Four-Firm Concentration Ratio in an Oligopolistic Five-Firm Industry

question 196

Multiple Choice

If the four-firm concentration ratio in an oligopolistic five-firm industry is 80 percent, and each firm has an equal percentage of sales, the Herfindahl index is

• A) 8,000.
• B) 2,000.
• C) 2,500.
• D) 1,600.

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Definitions:

EPSPs

Excitatory Postsynaptic Potentials, which are temporary increases in postsynaptic membrane potential caused by the flow of positively charged ions into the postsynaptic cell.

IPSPs

Inhibitory Postsynaptic Potentials (IPSPs) are synaptic potentials that make a postsynaptic neuron less likely to generate an action potential.

Neuronal Membrane

The lipid bilayer that surrounds a neuron, maintaining the ionic environment essential for neurotransmission.

Distant Dendrite's Tree

The elaborate branching structure at the end of a neuron's axon, allowing for connections with other neurons.