Simplify Write the Answer Using Positive Exponents Only $\left( \frac { x y ^ { 5 } } { x ^ { 5 } y } \right) ^ { - 2 }$

question 231

Multiple Choice

Simplify. Write the answer using positive exponents only.
- $\left( \frac { x y ^ { 5 } } { x ^ { 5 } y } \right) ^ { - 2 }$

• A) \(\frac { 1 } { x ^ { 7 } y ^ { 11 } }\)
• B) \(\frac { y ^ { 8 } } { x ^ { 8 } }\)
• C) \(\frac { 1 } { \mathrm { x } ^ { 12 } \mathrm { y } ^ { 12 } }\)
• D) \(\frac { x ^ { 8 } } { y ^ { 8 } }\)

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Definitions:

Random Error

An unpredictable variation in data or experimental results, which occurs without a discernible pattern.

Systematic Variance

Variability in a set of scores that is the result of the independent variable; statistically, the variability of each group mean from the grand mean of all subjects.

Null Hypotheses

A hypothesis stating there is no significant difference or effect, often denoted as H0, serving as the default assumption to be tested.

Type I Error

An incorrect decision to reject the null hypothesis when it is true.