Math Snap

STEP 1

Assumptions1. The mean pulse rate before exercise is75.54 bpm. The standard deviation of the pulse rate before exercise is11.62 bpm3. The mean pulse rate after running in place for one minute is125.03 bpm4. The standard deviation of the pulse rate after running in place for one minute is25.86 bpm

STEP 2

We need to compare the mean pulse rates before and after exercise.

STEP 3

First, let's write down the mean pulse rate before exercise.
$$Mean_{before} =75.54\, bpm$$

STEP 4

Next, let's write down the mean pulse rate after running in place for one minute.
$$Mean_{after} =125.03\, bpm$$

STEP 5

Now, we compare the two mean pulse rates.
If $Mean_{before} < Mean_{after}$, then the pulse rates before they exercised were less than the pulse rates after they ran in place for one minute.
If $Mean_{before} > Mean_{after}$, then the pulse rates before they exercised were greater than the pulse rates after they ran in place for one minute.
If $Mean_{before} = Mean_{after}$, then the pulse rates before they exercised were equal to the pulse rates after they ran in place for one minute.

STEP 6

Substitute the given values into the comparison.
$$75.54\, bpm <125.03\, bpm$$

Evaluate the comparison.
Since $75.54\, bpm <125.03\, bpm$ is true, the pulse rates before they exercised were less than the pulse rates after they ran in place for one minute.