A Calculator Answer of 423

question 6

Multiple Choice

A calculator answer of 423.6059 must be rounded off to three significant figures. What answer is reported?

• A)423
• B)424
• C)420
• D)423.6
• E)423.7

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Definitions:

Z-statistic

A measure that describes how far a data point is from the mean, expressed in units of standard deviation.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, commonly denoted by alpha and used as a threshold for determining the statistical significance of a result.

Parametric Test

A type of hypothesis test that assumes the sample data comes from a population that fits a certain distribution, typically a normal distribution.

Z-statistic

A measure used in statistics to describe the relationship between the standard deviation of the distribution and the deviation of a point from the mean.