Random sampling ensures that the composition of the sample matches the composition of the population.

Because of chance factors, the composition of the sample will differ somewhat from the composition of the population.
false
false
true
Make sure the qqqRandom Sampleqqq choice is selected. Run the simulation to see if the proportions in the sample always match the proportions in the population (Lions: 0.6; turtles: 0.3; rabbits: 0.1)
true
false
Assume a population in which all lions (60% of the members) prefer Candidate A, all turtles (30%) prefer Candidate B, and all rabbits (10%) prefer Candidate C. A random sample of 10 is taken from this population.

As you can see in the demonstration, 6 occurs about 25% of the time.
true
false
It is likely but not certain that exactly 6 of the sample will prefer Candidate A.
Make sure the qqqRandom Sampleqqq choice is selected. Use the simulation to generate multiple random samples. Notice how often there are either more than 6 or fewer than 6 lions in the random samples.
false
There is about a 50% chance that exactly 6 of the sample will prefer Candidate A.
Make sure the qqqRandom Sampleqqq choice is selected. Use the simulation to generate multiple random samples. Notice how often there are either more than 6 or fewer than 6 lions in the random samples.
true
The chance that exactly 6 of the sample will prefer Candidate A is much lower than 50%.
Assume a population in which all lions (60% of the members) prefer Candidate A, all turtles (30%) prefer Candidate B, and all rabbits (10%) prefer Candidate C. A stratified sample of 10 is taken from this population.

As you can see in the demonstration, 6 always occurs with stratified sampling.
true
false
It is likely but not certain that exactly 6 of the sample will prefer Candidate A.
Make sure the Stratified Sampleqqq choice is selected (click qqqresetqqq if necessary). Use the simulation to generate multiple random samples. Notice how often 6 lions are selected.
false
There is about a 50% chance that exactly 6 of the sample will prefer Candidate A.
Make sure the Stratified Sampleqqq choice is selected (click qqqresetqqq if necessary). Use the simulation to generate multiple random samples. Notice how often 6 lions are selected.
true
Six will always be selected.