A new sunscreen has been developed that is supposed to be more effective at
preventing sunburn. 30 participants spray one arm with the new formula, and spray the
other arm with the leading formula. After 4 hours in the sun, their skin is evaluated for
any redness.
the independent variable
Answers: 3
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A new sunscreen has been developed that is supposed to be more effective at
preventing sunburn. 30...
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