Evaluate $\left( - \frac { 2 } { 3 } \right) ^ { - 2 }$

question 94

Multiple Choice

Evaluate $\left( - \frac { 2 } { 3 } \right) ^ { - 2 }$

• A) \(\frac { 9 } { 4 }\)
• B) \(\frac { 4 } { 9 }\)
• C) \(\frac { - 9 } { 4 }\)
• D) \(\frac { 1 } { 4 }\)
• E) \(1\)

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Definitions:

Natural Variation

The inherent fluctuations in the characteristics or performance of processes or systems over time.

Capable

Refers to the ability or capacity of something or someone to achieve a particular task or goal.

X-bar And R-charts

Tools used in statistical process control; the X-bar chart monitors the mean of a process whereas the R-chart monitors the range or dispersion.