Given a random variable X, you may want to know whether some
effective parameter p is the same as some expected value p_{0}. You
will then want to test the hypothesis p = p_{0}, which will be the
null hypothesis H_{0}. The alternative hypothesis will be H_{1}.
The tests are:

- Two-tailed test
- This test will reject the hypothesis H
_{0}if the relevant statistic is outside of a determined interval. This can be denoted ’!=’. - Left-tailed test
- This test will reject the hypothesis H
_{0}if the relevant statistic is less than a specific value. This can be denoted ’<’. - Right-tailed test
- This test will reject the hypothesis H
_{0}if the relevant statistic is greater than a specific value. This can be denoted ’>’.