Suppose that you were asked to design a survey of adult city residents in order to estimate the proportion that would support a sales tax increase. the plan is to use a stratified random sample, and three stratification schemes have been proposed. scheme 1: stratify adult residents into four strata based on the first letter of their last name (a-g, h-n, o-t, u-z) scheme 2: stratify adult residents into three strata: college students, nonstudents who work full time, nonstudents who do not work full time. scheme 3: stratify adult residents into five strata by randomly assigning residents into one of the five strata. which of the three stratification schemes would be best in this situation

Responsible for setting the goals and planning for the future as well as leading and controlling the work of others. out the decisions of top management. often responsible for various departments such as the production, marketing, and accounting departments. process or function of planning organizing leading and controlling. the resources arranged in an orderly and functional way to accomplish goals and objectives. the company on track and making sure goals are met. for the daily operations of a business. examples of this are supervisors, office managers, and crew leaders. act or process of creating goals and objectives as well as the strategies to meet them. for the daily operations of a business. examples of this are supervisors, office managers, and crew leaders. how the firm is structured and who is in charge of whom. direction and vision