Question: Again using the data in Exercise 15.7, fit a negative exponential model. Compare it to the KaplanMeier curve at the event times 3, 4.5, 11.0,

Again using the data in Exercise 15.7, fit a negative exponential model.

Compare it to the Kaplan–Meier curve at the event times 3, 4.5, 11.0, 20.0, and 36.0 months, and decide whether or not the negative exponential provides a good fit.

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