Question

question #8
a response variable is the variable that changes because of a change in the explanatory variable.
false
true

question #9
which type of statistical study assigns subjects to treatments to see what effect the treatments have on some response?
long range study
observational study
experiment
survey

question #10
classify the method as survey, an experiment, or observational study.
a researcher wants to determine if the consumption of soy has any relationship with cholesterol levels. the researcher randomly chooses 100 people and ask how many of servings of soy they have each week and how high their cholesterol is.
survey
experimental study
observational study

Explanation:

Question #8

A response variable (dependent variable) changes due to the explanatory variable (independent variable). This is a fundamental concept in statistics.

An experiment assigns subjects to treatments to observe the effect on a response. In an observational study, no treatment is assigned. A survey is about gathering data through questions. A long - range study is not a standard statistical study type in this context.

In an observational study, the researcher only observes and measures variables (soy consumption and cholesterol levels here) without assigning any treatment. In an experiment, a treatment (like giving a certain amount of soy) would be assigned. A survey is more about asking questions (e.g., opinions) rather than measuring physiological variables in this way.

Answer:

True

Question #9