An investigator wants to take an unequal-probability sample of 10 of the 25 psus in the population listed below and in file exercise0602.dat, and wishes to sample units with replacement.

a. Adapt the cumulative-size method to draw a sample of size 10 with replacement with probabilities ψi. Instead of randomly selecting integers between 1 and

b. Adapt Lahiri’s method to draw a sample of size 10 with replacement with probabilities ψi.