null hypothesis vs. alternative hypothesis

null hypothesis vs. alternative hypothesis: ������'s the difference?

When formulating a formal scientific hypothesis, you should have a null hypothesis and an alternative hypothesis. The null hypothesis (often called H₀) is the idea that there is no relationship between the variables you’re studying. The alternative hypothesis (often called H₁) is the idea that there is a relationship between the variables you’re studying. An example set might be H1: “Cats meow more when they are hungry” vs H0: “Cats do not meow more when they are hungry.”