Producers of infant formula employ comprehensive food safety systems, including product testing to ensure those systems are working. A new study from the University of Illinois Urbana-Champaign finds ...

The authors advocate the use of the generalized variance of the sample means-the determinant of the variance-covariance matrix $D(\overline{y})$ of the means-as a ...

This is a preview. Log in through your library . Abstract Optimum allocation in stratified random sampling leads to a constrained optimization problem which is usually solved by any of the following ...

A total of 5,465 face-to-face household interviews were conducted using a stratified random sampling method, targeting citizens aged 15 and above. More than half of Nigerians would relocate abroad ...