Simplify Assume All Variables Represent Nonnegative Values $\sqrt { \frac { 63 a ^ { 2 } b } { c ^ { 2 } } }$

question 270

Multiple Choice

Simplify. Assume all variables represent nonnegative values.
- $\sqrt { \frac { 63 a ^ { 2 } b } { c ^ { 2 } } }$

• A) \(\frac { 9 a \sqrt { 7 b } } { c }\)
• B) \(\frac { 3 a \sqrt { 7 b } } { c }\)
• C) \(\frac { 3 \sqrt { 7 a ^ { 2 } b } } { c }\)
• D) \(\frac { a \sqrt { 63 b } } { c }\)

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Definitions:

Interval Variables

Variables that have meaningful distances between measurements but do not have a true zero point, allowing for both positive and negative values.

Normality Requirement

The assumption that the data or residuals in certain statistical models follow a normal distribution, required for the validity of many tests.

Spearman Rank-Correlation

A nonparametric measure of rank correlation, assessing how well the relationship between two variables can be described using a monotonic function.

Nonparametric Test

A type of statistical test that does not rely on data belonging to any particular distribution.