Shows empirical survival curves (Kaplan-Meier estimates) for the time between first and second births for the women whose first child survived one year and the women whose first child died within one...

Shows empirical survival curves (Kaplan-Meier estimates) for the time between first and second births for the women whose first child survived one year and the women whose first child died within one year of its birth.

a) Use the figure to give a crude estimate of the probability that a woman whose first child survived one year will have another child within two years of the birth of the first child. What is the estimate of this probability for a woman whose first child died within one year?

b) Estimate the lower quartile and the median in the survival distribution for the two groups of women.