Here is the review for the first exam of the second semester (scheduled for M/Tu, Jan 29/30) over inferences with proportions.
If you need to refer to the formulas, here is a guide for the foldable for this unit:
Today (Tu/W, Jan 23/24) is a practice day for everything in this current unit (inference with proportions).
Here is the homework packet for tonight (due Th/F, Jan 25/26):
And here is the test review that is due on exam day (M/Tu, Jan 29/30):
Here are the notes for 2-proportion z-intervals and z-tests (chapter 22 in the text).
Important note: If you use the calculator shortcuts to perform these problems, you are NOT required to write the formulas and show the work (you are required, however, to name the procedure in the problem). Anything in orange ink in the following notes, therefore, is optional.
And if you need to finish your foldable for the proportions unit, here are the slides to walk you through that:
Here are the notes for block #3 (W/Th, Jan 17/18) over chapter 21 (Type I/II errors, power of a test).
If you are extra-inquisitive, this is a bonus example calculation of beta and power: