diff --git a/education/statistics/Hypothesis Tests.md b/education/statistics/Hypothesis Tests.md
index bd5e49a..25b26d6 100644
--- a/education/statistics/Hypothesis Tests.md	
+++ b/education/statistics/Hypothesis Tests.md	
@@ -1,3 +1,4 @@
+(Ch 26, stat 1040)
 ## z tests for percentages
 This test can be used if:
 - The data is a simple random sample from the population of interest
@@ -8,12 +9,12 @@ If an observed value is too many SEs away from the expected value, it is hard to
 ### Null Hypotheses
 | Term | Description |
 | ---- | ---- |
-| Null Hypothesis | This is a statement about a *parameter* |
+| Null Hypothesis | This is a statement about a *parameter*. It's a statement about equality. The chance of getting *x* is *y%*. |
 | Alternative/Research Hypothesis | What the researcher is out to prove, a statement of inequality. (Less than, greater than, not equal to). |
 | One-tailed test | Use when the alternative hypothesis says that the % of 1s is less than or greater than expected. It's one sided |
 | Two tailed test | When something is not equal to the expected. |
 
 ## P Value
 The chance of observing at least a sample statistic, or something more extreme, if the null hypothesis is true.
-If the p-value is less than 5%, reject the null hypothesis.
-If the p-value is greater than 5%, fail to reject the null hypothesis.
+If the p-value is less than *5*%, reject the null hypothesis.
+If the p-value is greater than *5*%, fail to reject the null hypothesis.