**Remember, mandatory meeting for all AP students after school on 4/19**

1.) STAMPS are DUE! (or Tuesday, or Wednesday)--get them in!

• All stamps moving forward will be for the fourth quarter!
• Count up all your stamps and get them together (staple them, put them in a bag, put them in an envelope, build a container---whatever works)
• Feel free to rip a stamp off a corner of a paper or show me a stamp if it's on your notes--I really only need the stamp (or you can give me the full paper, you'll get them back)--whatever works
• Double check your count!
• I will re-count for 5 randomly selected students in each class. If your total is incorrect in any way you will earn a 0...so count twice

2.) Monday's Homework: "Inference for Two Proportions" worksheet! (last practice)

• I am definitely going to check this homework assignment tomorrow, and it's going to count double! So get this done!
• Tonight's homework is one last round of practice with all this "2 prop z" stuff! This is preparation for Wednesday's quiz (20 min at the start of class), which will be our last quiz grade of the fourth quarter!
• For #3 we have to work with the types of error:
• First, write your hypotheses--try to translate these into sentences to use for your types of error...
• Ho: p1 = p2  ("there is no difference in graduation rates of normal and low birth weight babies")
• Ha: p1 is not equal to p2 ("there is a difference in graduation rates of normal and low birth weight babies")
• From here it's all the same as before! In reality ______, but our test _______. 
• Remember to use the info given in the context for your consequences!
• Monday's HW:

And finally, here are some resources to help with your work tonight and to prepare for our quiz Wednesday--the images show the exact notes we took in class last Thurs/Fri!

2 Proportion Z Interval Video!

• This video skips the 10% condition and doesn't show the formula with the correct numbers substituted, but does a good job otherwise in using the calculator and interpreting the interval
• Another 2 Prop Z Interval Video!
• This video doesn't use the graphing calculator for the math like we would, but otherwise is pretty good; this video interprets the interval in a different (correct) way than the first video linked
• If you find any other/better videos please send me the link to share!
• 2 Proportion Z Interval Notes/Example (Thursday 3/22 notes):

• 2 Proportion Z Tests notes/example (Friday 3/23 notes):