Why is the researcher selecting participants of similar age and health status?

Imagine
a study that investigates the effect of exercise intensities on weight loss.
The researcher is randomly assigning males and females (of similar age and
health status) into three exercise intensity groups (consisting of: low,
medium, and high intensities). The purpose of the study is to determine the
effect of different exercise intensities on weight loss between males and
females. As to address what was learned in the past three weeks with this
week, please address the following:

Identify
the design of this study

State
the probable RQ and hypotheses (null and research)

Identify
the IVs and DV

What
statistical tool do you propose the researcher will use?

What
are the interactions and main effects for this study?

What
is the participant variable in this experiment?

Why
is the researcher selecting participants of similar age and health status?

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