The Next Few Questions Refer to the Following Description

question 17

Multiple Choice

The next few questions refer to the following description.
In the ocean, on either side of the Isthmus of Panama, are 30 species of snapping shrimp; some are shallow-water species, others are adapted to deep water. There are 15 species on the Pacific side and 15 different species on the Atlantic side. The Isthmus of Panama started rising about 10 million years ago.
In the following figure, the isthmus separates the Pacific Ocean on the left (side A) from the Atlantic Ocean on the right (side B) . The seawater on either side of the isthmus is separated into five depth habitats (1-5) , with 1 being the shallowest.

-In which habitat should one find snapping shrimp most closely related to shrimp that live in habitat A4?

• A) A3
• B) A5
• C) B4
• D) either A3 or A5
• E) any species from any one of the side A habitats

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Definitions:

Null Hypothesis

An initial statement that there is no effect or no difference and that any observed variation is due to chance, used as a starting point for statistical testing.

Workplace Accidents

Workplace accidents are unexpected and unplanned occurrences in a work environment that result in injury, illness, or damage.

Level Of Significance

A predefined cutoff value that determines the critical threshold at which the null hypothesis is rejected in statistical analysis.

Fair Die

A perfectly balanced die where each face has an equal probability of landing face up upon being thrown.