Question: what is the difference between a null and an alternative hypothesis what notation is used for each?
Answer: In a hypothesis test, we: Evaluate the null hypothesis, typically denoted with H0. ... The null statement must always contain some form of equality (=, ≤ or ≥) Always write the alternative hypothesis, typically denoted with Ha or H1, using less than, greater than, or not equals symbols, i.e., (≠, >, or <).