Bud N Chemist Must Determine the Density of a Mineral Sample

question 32

Multiple Choice

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm³, 4.67 g/cm³, 4.69 g/cm³, and 4.81 g/cm³. Independent studies found the correct density to be 4.75 g/cm³. Which of the following statements represents the best analysis of the data?

• A)Bud's results have much greater accuracy than precision.
• B)Bud's results have much greater precision than accuracy.
• C)Bud's results have high accuracy and high precision.
• D)Bud's results have low accuracy and low precision.
• E)Bud's equipment is faulty.

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Definitions:

Test Statistic

A test statistic is a value calculated from sample data during hypothesis testing, used to decide whether to reject the null hypothesis.

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis; it denotes the threshold of significance.

Significance Level

The probability threshold below which a null hypothesis is rejected in hypothesis testing, often denoted by alpha (α).

Obtained Value

The result or outcome achieved from a calculation or experiment.