The Department of Natural Resources Defines a Fish to Be

question 37

Essay

The department of natural resources defines a fish to be unsafe to eat if the polychlorinated biphenol (PCB) concentration exceeds 5 parts per billion (ppb). A random sample of 10 fish taken from a local lake resulted in the data listed below:
2.6, 6.6, 4.8, 5.4, 5.1, 4.5, 6.9, 4.9, 3.7, 3.8
Is there sufficient evidence to conclude that the mean PCB concentration for fish from this lake exceeds 5 ppb?

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Definitions:

Papillary Muscles

Muscle projections from the ventricular walls of the heart that attach to the chordae tendineae and prevent inversion of the valves during contraction.

Atria Contraction

The process during the cardiac cycle where the atria chambers of the heart contract to move blood into the ventricles.

Pulse Pressure

The difference between systolic and diastolic blood pressure, indicating the force that the heart generates each time it contracts.

Ejection Phase

This is the part of the cardiac cycle during which the ventricles contract and pump blood out into the arteries.