Evaluate the Expression A) $\left[ \begin{array} { c c } 8 & 6 \\ - 3 & - 7 \end{array} \right]$

question 31

Multiple Choice

Evaluate the expression.
$\left[ \begin{array} { c c } 4 & - 3 \\- 9 & 1\end{array} \right] + \left[ \begin{array} { c c } 2 & 8 \\- 2 & - 4\end{array} \right] + \left[ \begin{array} { c c } - 2 & - 1 \\- 8 & 4\end{array} \right]$

• A) \(\left[ \begin{array} { c c } 8 & 6 \\ - 3 & - 7 \end{array} \right]\)
• B) \(\left[ \begin{array} { c c } 4 & 4 \\ - 19 & 1 \end{array} \right]\)
• C) \(\left[ \begin{array} { c c } 6 & 5 \\ - 11 & - 3 \end{array} \right]\)
• D) \(\left[ \begin{array} { l l } 1 & 0 \\ 0 & 1 \end{array} \right]\)
• E) not possible

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Definitions:

Meta-analysis

A statistical technique for combining the findings from independent studies to determine the overall trend or effect.

Bayesian Statistic

A statistical method that applies probability to statistical problems, incorporating prior knowledge as well as new evidence.

Independent Variable

A variable that an experimenter manipulates.

Control Variable

A variable that is kept constant during a scientific experiment to ensure that any changes in the outcome can be attributed to the variables being tested.