3. Exercise 3: Survival of the Donner Party

In 1846, a group of 87 people (called the Donner Party) were headed west from Springfield, Illinois, to California. The leaders attempted a new route through the Sierra Nevada and were stranded throughout the winter. The harsh weather conditions and lack of food resulted in the death of many people within the group. Social scientists have used the data to study the theory that females are better able than males to survive harsh conditions. The data are saved under Donner. txt.

(a) Create a logistic regression model using gender and age as predictors and provide the equation of the estimated model.
(b) Interpret the regression coefficients.
(c) Estimate the survival probability of a 20-year old female (show your calculation).
(d) Explain why the deviance or Pearson goodness-of-fit tests are not appropriate.
(e) Assess the model goodness-of-fit.

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