An Analyst Is Assigned a Blind Quality Control Sample of Blood

question 5

Multiple Choice

An analyst is assigned a blind quality control sample of blood containing a drug metabolite. He tests ten separate portions and obtains the following data for the concentration in ug/mL:
25.2
24.8
26.6
27.0
24.0
26.0
25.5
26.3
24.9
23.9
Calculate the mean value and report to three significant figures. Use a spreadsheet or calculator

• A) 12.328
• B) 23.7
• C) 25.0
• D) 25.4
• E) 24.9

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Definitions:

Dip Slope

The gently inclined surface of a bedded rock, tilting in the same direction as the strata.

High Pressure

A condition of great force exerted over an area, often associated with deep sea environments, weather systems, or geological processes.

Low Temperature

A condition where the environment or a specific object has a temperature below the average or expected.

Subduction Zone

A region of Earth's crust where two tectonic plates converge, and one plate is forced underneath the other into the mantle, often leading to volcanic activity and earthquakes.