Some ratio estimators for estimating the population mean of the variable
under study, which make use of information regarding the population proportion
possessing certain attribute, are proposed. Under simple random sampling
without replacement (SRSWOR) scheme, the expressions of bias and mean-squared
error (MSE) up to the first order of approximation are derived. The results
obtained have been illustrated numerically by taking some empirical population
considered in the literature.Comment: 7 page