Using the model fit in estimate the year in which the female record will match the male record, and use the delta method to estimate the standard error of the year in which they will agree. Comment on...

Using the model fit in estimate the year in which the female record will match the male record, and use the delta method to estimate the standard error of the year in which they will agree. Comment on whether you think using the point at which the fitted regression lines cross is a reasonable estimator of the crossing time.

(Data file: Transact) Use the delta method to get a 95% confidence interval for the ratio β₁/β₂
for the transactions data, and compare with the bootstrap interval obtained at the end.