Find the Product AB, If Possible A) $\mathrm { AB }$

question 137

Multiple Choice

Find the product AB, if possible.
- $A = \left[ \begin{array} { r r r } 3 & - 2 & 1 \\ 0 & 4 & - 3 \end{array} \right] , B = \left[ \begin{array} { r r } 4 & 0 \\ - 2 & 3 \end{array} \right]$

• A) \(\mathrm { AB }\) is not defined.
• B)
• \(\left[ \begin{array} { r r r } 12 & - 8 & 4 \\ - 6 & 16 & - 11 \end{array} \right]\)
• C)
• \(\left[ \begin{array} { r r } 12 & - 6 \\ - 8 & 16 \\ 4 & - 11 \end{array} \right]\)
• D)
• \(\left[ \begin{array} { r r } 12 & 0 \\ 0 & 12 \end{array} \right]\)

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Definitions:

Social Desirability

The tendency of respondents to answer questions in a manner that will be viewed favorably by others, which can bias survey and research outcomes.

Cognitive Dissonance

A psychological phenomenon where there is a feeling of uncomfortable tension which comes from holding two conflicting thoughts in the mind at the same time.

Carryover Effect

A phenomenon where the effect of a previous condition persists and influences performance in subsequent conditions in a study.

Self-Serving Bias

A cognitive bias where individuals attribute their successes to internal factors and their failures to external factors.