For Each of the Following Statements, Indicate Whether the Statistical

question 11

Multiple Choice

For each of the following statements, indicate whether the statistical association is likely due
-A cohort study found no statistical association between smoking and coronary heart
Disease (RR = 1, p-value = 0.75) .

• A) chance
• B) bias
• C) confounding.

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Definitions:

Chert Formation

The process by which chert, a hard, sedimentary rock composed primarily of silicon dioxide, is formed, typically from the accumulation of silica from biological sources or chemical precipitation.

Silica-rich Organisms

Organisms, such as certain diatoms and sponges, that have skeletons made predominantly of silica (SiO2) compounds.

Seawater

The salty water that fills the oceans and seas, covering most of the Earth's surface.

Sediment Deposition

The process by which sediment settles out of the transportation medium and accumulates on a surface, forming layers of sediment.