The world population is currently growing by __________ million each year.

More than one-third of the cost of state and local government is employees' salaries

Indicate whether the statement is true or false

Which of the following explains the use of probability sampling?

a) the likelihood of any one member of a population being selected is known b) the likelihood any one member of a population being selected is unknown c) randomly selecting any one member from the population is effective d) randomly selecting any one member from the population is underestimated