The null hypothesis is assumed true until proven otherwise. A hypothesis, also known as an alternative hypothesis, is an educated theory or “guess” based on limited evidence that requires ...

In Hypothesis Testing 1, you were introduced to the ideas of hypothesis testing in the context of deciding whether a coin was fair or biased in favor of heads. In this section hypothesis testing ...

This initial statement is called the Null Hypothesis and is denoted by Ho. An alternative or alternate hypothesis (denoted Ha), is then stated which will be the opposite of the Null Hypothesis.