vault backup: 2024-02-02 13:03:50

education/statistics/Hypothesis Tests.md

@@ -7,6 +7,10 @@ This test can be used if:
 - Can use a box with tickets of 1s and zeros to represent the population
 If an observed value is too many SEs away from the expected value, it is hard to explain by chance.
 
+Start by finding a null and alternative hypothesis, eg:
+- Null: The chance of *x* taking place is *y*%. This is often given in the problem
+- Alternative: If you're being asked to determine if something has changed, you're determining whether or not *x* is not equal to y
+
 | Term | Description |
 | ---- | ---- |
 | Null Hypothesis | This is a statement about a *parameter*. It's a statement about equality. The chance of getting *x* is *y%*. A null hypothesis isn't proven true, you either prove it wrong (reject it), or don't (fail to reject).  |