In a sample, which statement is TRUE about the age of the group surveyed?
Responses
A The age of the group surveyed should be lower than that of the population.The age of the group surveyed should be lower than that of the population.
B The age of the group surveyed should be greater than that of the population.The age of the group surveyed should be greater than that of the population.
C The age of the group surveyed should be proportional to that of the population.The age of the group surveyed should be proportional to that of the population.
D The age of the group surveyed should not be proportional to that of the population.