Determine how a new type of sunscreen affects

Reference no: EM133635767

Case: To determine how a new type of sunscreen (Sunaway) affects the general health of skin in comparison to a regular
sunscreen (Skin Protect), 40 trial participants were randomly separated into equal groups of 20: an experimental arm and
a control arm. All participants' skin health was then initially evaluated (baseline measure).

1. Which sunscreen will the experimental group wear?

2. Which sunscreen will the control group wear?

3. Should we add a third study arm with participants who wear no sunscreen? Why or why not?

Reference no: EM133635767

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