[Q10e: Only answer if you ABSOLUTELY know how to solve AND the answers match up

Question

[Q10e: Only answer if you ABSOLUTELY know how to solve AND the answers match up ((tired of getting wrong replies.) So, please make sure you’re really certain. [It’s appreciated.])

Really Explain EACH STEP, including any formulas you used (& how to use the formula), and explain how to compute with a TI-84 preferably/when possible.]

NO JUST POSTING THE ANSWER WITH NO EXPLANATION/ NO CONVINCING EXPLANATION, I WILL ASSUME IT'S WRONG, AS HAS BEEN THE CASE BEFORE. IF YOU'RE THIS TYPE, MOVE ON.

Question

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) = 0.094*(age) + 0.258*(HR) + 0.033*(time) + 6.922. If a person is 41.689 years old, has a heart rate of 136.451 bpm, a walking time of 12.609 minutes, and a maximum oxygen intake of 23.294 L/min, the residual would be -23.1672. What is the best interpretation of this residual?

Question options:

1)

2)

3)

4)

5)

1)

The max oxygen intake is 23.1672 L/min greater than what we would expect.

2)

The max oxygen intake is 23.294 L/min less than what we would expect.

3)

The heart rate is 23.1672 bpm less than what we would expect.

4)

The max oxygen intake is 23.1672 L/min less than what we would expect.

5)

The heart rate is 23.1672 bpm larger than what we would expect.

Explanation / Answer

The residual of -23.1672 means:

The max oxygen intake is 23.1672 L/min less than what we would expect.

Option 4 is correct.

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