Question

In an experiment on a new drug to determine the most effective dose and method of administration, patients were randomly assigned to a 5-, 10-, 15-, or 20-mg dose of the active drug. In addition, the method of delivery of the drug (pill, skin patch, or nasal mist) was considered. In this experiment, there were how many treatments?

Answer 1

The total number of treatments in the drug experiment, considering both dosage levels and methods of administration, is 12.

Step-by-step explanation:

In an experiment testing a new drug with variables including dose amount and method of administration, the number of treatments can be calculated by multiplying the number of options for each variable. There are four dosage options (5, 10, 15, or 20-mg) and three methods of administration (pill, skin patch, nasal mist). To find the total number of treatments, we multiply the number of dosages by the number of methods of delivery. Thus, the number of treatments is 4 (dosages) × 3 (methods) = 12 treatments.