Evaluate the Expression $( - 81 ) ^ { 1 / 2 }$

question 315

Multiple Choice

Evaluate the expression.
- $( - 81 ) ^ { 1 / 2 }$

• A) \(- 9\)
• B) 9
• C) \(- 4.5\)
• D) not a real number

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Definitions:

SPSS

A comprehensive software package used for statistical analysis, widely used in social science research for data management and analysis.

Fisher's LSD

A method developed by Ronald Fisher for performing multiple comparisons among means, typically used after an ANOVA to identify differences between pairs of means.

Type I Error

The incorrect rejection of a true null hypothesis in statistical hypothesis testing, also known as a "false positive."

Type II Error

The error that occurs when a false null hypothesis is not rejected, often referred to as a "false negative."