Question: 18.3 Table 18.9 gives data on 14 people aged 15 and older on the following variables: Minutes: time spent running on a treadmill, in minutes

18.3 Table 18.9 gives data on 14 people aged 15 and older on the following variables: Minutes: time spent running on a treadmill, in minutes Age: age in years Weight: weight in pounds Gender: 1 for female, 0 for male Censored: 0 if censored, 1 if not censored.

(a) What is the expected relationship between running time and each of the regressors?

(b) Estimate a hazard function, using the exponential distribution.

(c) Estimate a hazard function, using the Weibull distribution.

(d) How do the two models compare? Which one would you choose?

(e) Fit the Cox Proportional Hazard model to the same data.

(f) Which in your view is the best model?

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