Question

The volume of oxygen consumed (in liters per minute) while a person is at rest and while he or she is exercising (running on a treadmill) was measured for each of 50 subjects. The goal is to determine if the volume of oxygen consumed during aerobics exercise can be estimated from the amount consumed at rest. The results are plotted below.

In this study, the explanatory variable is

A. The measuring instrument used to measure the volume of oxygen consumed.

B. it doesn't matter which is considered the response. Either variable is appropriate.

C. The volume of oxygen consumed while running.

D. The volume of oxygen consumed while resting.

Princ 2 33 one Carand & 30- à 231 20- OM Wine Corende Pest

Answer 1

Ans:

We are using the volume of oxygen consumed while resting to estimate the volume of oxygen consumed during aerobic exercise,so the explanatory variable(or independent variable) is:

The volume of oxygen consumed while resting.

Option D is correct.