Statistical Hypothesis- a conjecture about a population parameter. This conjecture may or may not true.

Two types of statistical hypotheses:

1. Null Hypothesis- symbolized by H(sub 0). States that there is no difference between a parameter and a specific value or that there is no difference between two parameters.

2. Alternative Hypothesis- symbolized by H(sub 1). States the existence of a difference between a parameter and a specific value, or states that there is a difference between two parameters.

R.A.F.Tiron