An Improved Unrelated Question Randomized Response Strategy

We consider the problem of estimating π the proportion of human population belonging to the sensitive category. A new randomized response procedure using known πr (the proportion of population possessing a non-stigmatized attribute) bas been proposed. The proposed strategy provides unbiased and more efficient estimator of π than the one based on Greenberg et al.'s (1969) usual unrelated question randomized response model with known πr