If Possible, Find AB A) $\left[ \begin{array} { c c } - 5 & 2 \\30 & - 3 \\30 & 5\end{array} \right]$

question 265

Multiple Choice

If possible, find AB. $$A = \left[ \begin{array} { l } - 5 \\- 1\end{array} \right] , B = \left[ \begin{array} { c c } 1 & - 2 \\- 6 & 3 \\- 6 & - 5\end{array} \right]$$

• A) \(\left[ \begin{array} { c c }
• - 5 & 2 \\
• 30 & - 3 \\
• 30 & 5
• \end{array} \right]\)
• B)not possible
• C) \(\left[ \begin{array} { l l l }
• - 7 & 33 & 25
• \end{array} \right]\)
• D) \(\left[ \begin{array} { c }
• - 3 \\
• 27 \\
• 35
• \end{array} \right]\)
• E) \(\left[ \begin{array} { c }
• - 7 \\
• 33 \\
• 25
• \end{array} \right]\)

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Definitions:

Independent Variable

A variable that is manipulated to determine its effects on a dependent variable in an experimental setting.

Nominal

A scale of measurement used to label variables without a quantitative value, categorizing data without a natural order or ranking.

Research Hypotheses

Statements made by researchers that predict a relationship between variables, to be tested by scientific research.

Samples and Populations

Concepts in statistics where a sample represents a subset of a larger group (population) from which it is drawn and is used to infer properties about the population.