Answer:
D. There is no association because the distribution of lunch preference is approximately the same among the pet groups.
18 bags of sand will be needed
Answer:What are the equivalence classes of the equivalence relations in Exercise 3? A binary relation defined on a set S is said to be equivalence relation if it is reflexive, symmetric and transitive. An equivalence relation defined on a set S, partition the set into disjoint equivalence classes
