Cardiorespiratory fitness is widely recognized as a major component of overall physical well-being. Direct measurement of maximal oxygen uptake (VO2max) is the single best measure of such fitness, but direct measurement is time-consuming and expensive. It is therefore desirable to have a prediction equation for VO2max in terms of easily obtained quantities. A sample is taken and variables measured are age (years), time necessary to walk 1 mile (mins), and heart rate at the end of the walk (bpm) in addition to the VO2 max uptake. The equation from a multiple regression is (V02) = 0.088*(age) - 0.099*(HR) + 0.027*(time) + 2.421. If a person is 49 years old, has a heart rate of 103 bpm, and a walking time of 13 minutes, and a maximum oxygen intake of 20.198 L/min, what is the residual?

Question 16 options:

1)23.311

2)-52.113

3)-23.311

4)We do not know the observations in the data set, so we cannot answer that question.

5)25.732