Cardiorespiratory fitness is widely recognized as a major component of overall p

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 measure 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 and heart rate at the end of the walk (bpm) in addition to the VO2 max uptake. The following output is from a multiple regression. Based on the F-test alone, what is the correct conclu about the regression slopes? ment is time-consuming and expensive. It is therefore sion t-ratioP Predictor Constant age HR tine Coef -24.07 0.393 0.289 -1.512 Stdev 24.296 0-279 0.272 0.466 -0.99 1.41 1.06 -3.24 0.3431 0·1858 .3099 0.007841 -7.446 : R-sq-58.77% R-sq (adj ) -47.53% Analysis of Variance DF SOURCE Regression Error Total MS 289.76 55·44 5.23 869.28 609.81 1479.09 0.0174 14 1) We do not have the dataset, therefore, we are unable to make a conclusion about the slopes. 2) All the regression slopes do not equal zero. DOLL

Explanation / Answer

As we can see from the output that the p - value corresponding to the time coefficient is very small which is making the slope significant. All others are not significant.

Hence,

Option 4 is correct.

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