The Sizes of Two Matrices Are Given $A$ Is $4 \times 4$

question 298

Multiple Choice

The sizes of two matrices are given. Find the size of the product AB and the size of the product BA, if the given product
can be calculated.
- $A$ is $4 \times 4$ ; B is $4 \times 4$ .

• A) \(\mathrm { AB }\) is \(1 \times 1\); BA is \(1 \times 1\).
• B) \(\mathrm { AB }\) is \(4 \times 4\); BA is \(4 \times 4\).
• C) \(\mathrm { AB }\) is \(8 \times 4\); \(\mathrm { BA }\) is \(8 \times 4\).
• D) \(\mathrm { AB }\) is \(4 \times 8\); BA is \(4 \times 8\).

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Definitions:

Groups

A collection of individuals or items classified together based on certain criteria or characteristics.

Null Hypothesis

The default hypothesis that there is no significant difference or effect, used as a starting point for statistical hypothesis testing.

Test Statistic

A value calculated from sample data during a hypothesis test, used to make a decision about the null hypothesis.

Distribution

Refers to the way in which something is shared out among a group or spread over an area.