An experiment was designed using school children as subjects to determine whether milk prevented their catching colds. the researcher randomly assigned 100 school children to two groups - one group of 50 to receive a cup of milk at school each day and the other group of 50 to receive no milk at school.
1.what is the response variable? remember: the response variable is measured on the individual.
a) the number of children who caught a cold
b) whether the child received a cup of milk at school each day
c) whether the child caught a cold
d) the number of children who received a cup of milk at school each day
2.what is the explanatory variable in the milk study?
a) whether the child received a cup of milk at school each day
b) the number of children who received a cup of milk at school each day
c) the number of children who caught colds
d) whether the child caught a cold