It makes a difference whether or not we know the population variance because
a. we cannot deal with situations in which the population variance is not known.
b. we have to call the result t if the population variance is used.
c. we have to call the result z if the population variance is not used.
d. we have to call the result t if the sample variance is used.
Question 2
If the population from which we draw samples is rectangular, then the sampling distribution of the mean will be
a. rectangular.
b. normal.
c. bimodal.
d. more normal than the population.
Area of Manatee Population
GUIDELINES FOR ASSESSING MEMBERS OF VULNERABLE POPULATION GROUPS
Population of Major Civilizations of Europe, Asia, and Africa, AD 1500
Population and Settlement
Population growth rate %
Population of California poppy plants