Question

1. A study is done to see how high soda will erupt when mint candies are dropped into two-liter bottles of soda. You want to compare using one mint candy, five mint candies,

and 10 mint candies. You design a cylindrical mechanism, which drops the desired number of mint candies all at once. You have 15 bottles of soda to use. You randomly assign five
bottles into which you drop one candy, five into which you drop five candies, and five into which you drop 10 candies. For each bottle, you record the height of the eruption created after
the candies are dropped into it.

Answer 1

For this case we can say that we have an experiment since we have a tratment variable and a response variable, is not an observational study since they are not just seeing the subjects, they want to test if there is a significant effect on the 3 levels studied.

We have a treatment variable and the respective response variable.

Treatment variable: Type of treatment with 3 levels

Response variable: Height of the eruption created

Explanation:

Assuming this question "If is an experiment then identify the treatment variable and the response variable in the experiment of the problem. If it is an ibservational study identify the population of interest."

Previous concepts

By definition experiment is "a controlled study in which the researcher attempts to understand cause-and-effect relationships"

By definition in observational study,"the researchers only observe the subjects and do not interfere or try to influence the outcomes"

Solution to the problem

For this case we can say that we have an experiment since we have a tratment variable and a response variable, is not an observational study since they are not just seeing the subjects, they want to test if there is a significant effect on the 3 levels studied.

We have a treatment variable and the respective response variable.

Treatment variable: Type of treatment with 3 levels

Response variable: Height of the eruption created