Hypothesis Testing — Null Hypothesis, P-value, and Significance

In this lesson, we will learn hypothesis testing. We will understand null hypothesis, alternative hypothesis, significance level, p-value, Type I and Type II errors, and one-tailed and two-tailed tests through practical examples. ## Lesson objective In this lesson, we will learn hypothesis testing. In the previous lesson, we covered confidence intervals. We learned point estimate, margin of error, confidence level, standard error, and how to estimate a population parameter using an interval based on sample data. Now we move to another very important topic in statistics: hypothesis testing. Hypothesis testing is used to test a claim based on data.