A researcher believes that working out in colder temperatures will burn more calories because a person has to burn more calories to keep warm. The researcher decides to study various groups of people working out at different temperatures and measure their progress. How would you describe the temperature in the study? A Observational

B Experimental

C Census

D Simulation

B. Experimental

Step-by-step explanation:

The only way to properly study this would be by using an experimental study. The researcher would need to create different groups and place them in different temperature conditions but keeping all of the other variables in the study the same while they exercise. Then gather as much data as possible including weight, calorie consumption, body temperature, etc. Finally, analyze the data and come to a conclusion. The other types of studies will not allow the researcher to gather the necessary data to come to a proper conclusion.

4

step-by-step explanation:

im pretty sure it's 4 beacsue 8/2 equals 4

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20