Question

many types of bacteria cannot survive on objects made of copper. dr. barrett was considering using beds with copper bed rails instead of beds with plastic rails at the hospital where she worked. she wanted to know if copper bed rails would reduce the number of patients who got new infections. to test this, dr. barrett had copper rails placed in half of the hospital rooms. over the next six months, 430 patients were admitted to the hospital: 215 patients were put in rooms with copper bed rails and 215 patients were put in rooms with plastic bed rails. dr. barrett counted the number of patients in each type of room who got new infections while they were in the hospital. which of the following was a dependent variable in this experiment? the number of patients who got new infections the type of bed rail

Explanation:

A dependent variable is what is measured. Here, Dr. Barrett measures new - patient infections. So the number of patients who got new infections is the dependent variable.

Answer:

The number of patients who got new infections