As Part of an Experiment to Determine the Density of a New

question 10

Multiple Choice

As part of an experiment to determine the density of a new plastic developed in her laboratory, Sara Ann Dippity measures the volume of a solid sample. Her four trials yield volumes of 12.37 cm³, 12.41 cm³, 12.39 cm³, and 12.38 cm³. Measurements of other scientists in the lab give an average volume of 12.49 cm³. Which of the following statements represents the best analysis of the data?

• A)Sara's results have low precision and high accuracy.
• B)Sara's results have high precision and high accuracy.
• C)Sara's results have greater precision than accuracy.
• D)Sara's results have greater accuracy than precision.
• E)Sara has been using a faulty instrument to measure the volume.

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Definitions:

Control Zone

A specific area or region where regulations and measures are applied to control the flow, access, or activities within it.

Cecum

The first section of the large intestine, acting as a junction between the small intestine and the large intestine.

White Blood Cells

Cells of the immune system involved in protecting the body against both infectious disease and foreign invaders.

Germinal Center

A region within lymph nodes where mature B cells proliferate, differentiate, and mutate their antibody genes during an immune response.