what is the sample size for a binary variable for a stratified sampling? what is the optimal sampling sampling? what is the sample size per stratum? what are the optimizations or goals to consider when using stratified sampling? which is an example of a population size for stratified sampling? what is the sample size per stratum for a binary variable when designing the strategy, what is the sampling strategy? what is the purpose of stratified sampling what is the sample size per stratum for the binary variable n_h what is the sampling optimization how to select the population for a stratified sampling sample how to determine the margin of error in stratified sampling how to determine sampling margin of error for a sample which is an example of a sampling strategy which consideration should be considered when selecting a stratified sample in a population analysis? when selecting an allocation strategy what is the sampling strategy which is the best sampling practice for a binary variable? what is sample size in a stratified sampling what is the margin of error for each stratum? what is the sampling optimization for a stratified sample