The Magnitudes of Two Horizontal Displacements Are 4 M and 9

question 3

Multiple Choice

The magnitudes of two horizontal displacements are 4 m and 9 m, respectively. Given that the vectors may be in either the plus or the minus direction, they cannot be added together to give a total displacement of

• A) -13 m.
• B) -5 m.
• C) 5 m.
• D) 13 m.
• E) 4 m.

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Definitions:

Bias

A systematic error or deviation from the truth in results or inferences that can affect the validity of research findings.

Randomization

is a process used in experimental designs to allocate subjects randomly to different groups to ensure each group is similar and that the treatment effects can be attributed solely to the treatment being tested.

Concealment of Random Allocation

A technique used in clinical trials to prevent selection bias by ensuring the assignment of participants to different groups is not known in advance by the researchers.

Masking

A method in research where information that could influence the results is concealed from participants, researchers, or both, to minimize bias.