which is the population of the widget x? what is the total population of x which wp widget has a population x? how many y widgets are in the widget x population for the y widget what is the population of widget y what is the population of y how to estimate the population size of a widget what is the population of y what is the population of the widget a what is the population of the reference widget what is y's population what is the population of x? with what confidence what is the total population of y what is the population of y and x? what is the population of y which of the following is an example of a population estimate? what is y population wikipedia what's the population size of widget y what is the population of x in a widget