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.
Continuous variation in a natural population
Predators and Population Cycles
By how many times will the population of bacteria have increased after 6 h?
Relationship Between Income per Capita and Population Growth
Difference Between Solar and Sidereal Day
population pyramid of Croatia