A company is developing a new drug for reducing the symptoms of pollen allergies

Question

A company is developing a new drug for reducing the symptoms of pollen allergies. They have developed two forms of the drug: A and B. The company w ants to find out which form of the drug is most effective and to determine whether the amount to be taken each day should be split into one, two, or three doses. A set of volunteers who suffer from pollen allergies is split into six groups to receive treatments according to the following table. How many explanatory variables (factors) are there in this experiment? (A) 1 (B) 2 (C) 3 (D) 5 (E) 6

Explanation / Answer

There are 2 explanatory variables( factors) in this experiment : Drug A and Drug B.

So option (B) is the correct choice.

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