Question

the colorado division of wildlife netted and released 774 fish at quincy reservoir. there were 219 perch, 315 blue gill, 83 pike, and 157 rainbow trout. (a) following studies? this is an experiment because observations and measurements of individuals are conducted in a way that doesnt change the response or the variable being measured. this is an observational study because observations and measurements of individuals are conducted in a way that doesnt change the response or the variable being measured. this is an experiment because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response variable or being measured. this is an observational study because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response or variable being measured.

Explanation:

In an observational study, no treatment is deliberately imposed. In an experiment, a treatment is deliberately imposed on individuals to observe a possible change in the response variable. Since in the described situation a treatment was deliberately imposed on individuals to observe a change in the response variable, it is an experiment.

Answer:

This is an experiment because a treatment was deliberately imposed on the individuals in order to observe a possible change in the response variable being measured.