Study!

Tonight's homework is to STUDY! We have our chapter 21 vocab quiz tomorrow and then our test (chapters 19, 20, 21) on Wednesday!

Here's the vocab list for tomorrow--we have not covered some of the words--use the glossary in the back of 21 to review them for tomorrow!

1. Statistically Significant (if our p-value is below the alpha level--so we reject the null--we say our test is "statistically significant" at that alpha level)
2. Alpha Level/Significance Level (both as a cutoff value to determine if we reject or fail to reject the null, and know that it's the probability of a Type 1 error)
3. Beta (the probability of a type 2 error)
4. Critical Value
5. Type 1 Error (when the null is true but we mistakenly reject it)
6. Type 2 Error (when the alternative is true but our test fails to show this)
7. Power (the likeliness/probability that a test correctly rejects a false null hypothesis; also, know that power is calculated by 1 - beta)
8. Effect Size (the difference/distance between the assumed value of p--from the null hypothesis--and our sample percent, or p-hat)
9. Standardized Test Statistic
10. What decision do we make for a low p-value, or a p-value < alpha?
11. What decision do we make for a high p-value, or a p-value > alpha?

Check back tomorrow for a breakdown of what's on Wednesday's test!