Question

Which of the following statements is an example of a null hypothesis?  (Select all that apply.)

		In comparing cat and dog popularity, stating that they are equally popular.
		In exploring if a cutting machine is working properly, stating that it is probably cutting wood too thick.
		None of these
		In determining if people who drink more water are healthier, stating that drinking more water leads to greater health.

Answer 1

The correct statements of null hypothesis are:

In comparing cat and dog popularity, stating that they are equally popular.

Option A is the only correct option.