Question: =+expenditure requirements for physically demanding tasks. The paper Oxygen Consumption During Fire Suppression: Error of Heart Rate Estimation (Ergonomics [1991]: 14691474) reported on a study

=+expenditure requirements for physically demanding tasks.

The paper “Oxygen Consumption During Fire Suppression: Error of Heart Rate Estimation” (Ergonomics [1991]:

1469–1474) reported on a study in which x 5 oxygen consumption (in milliliters per kilogram per minute) during a treadmill test was determined for a sample of 10 firefighters. Then y 5 oxygen consumption at a comparable heart rate was measured for each of the 10 individuals while they performed a fire-suppression simulation. This resulted in the following data and scatterplot:

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