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.

• Notes [WEB] 7.5 - Inference with Two Proportions
• HW #5 Problems

And if you need to finish your foldable for the proportions unit, here are the slides to walk you through that:

• Powerpoint 7.x - Foldables - Proportions

Here are the notes for block #4 (W/Th, Jan 16/17) over chapter 21 (Type I/II errors, power of a test).

• Notes 7.4 - Type I and II Errors and Power
• Notes 7.4 - Just the "handout" part of the notes
• HW #4 Problems

ALSO...

If you are extra-inquisitive, this is a bonus example calculation of beta and power:

• 21 Extra Example - Calculating Power (this is not something that you need to know for this class)

Today (M/Tu, Jan 14/15) marks our first foray into hypothesis testing with proportions for 1-sample (1-proportion z-tests). This is quite the important section of the course so please ask someone for help if you're having trouble with it.

• Notes [WEB] 7.3 - Hypothesis Testing with Proportions
• HW #3 Problems

No new notes today (Th/F, Jan 10/11) - check the lesson notes from last time if necessary. The two items from class today, in case you missed it:

• Worksheet - Review Collecting Data & Designing Studies
• HW #2 PROBLEMS

Here are the slides from the 1st lesson of the semester (T/W, Jan 8/9), over 1-sample z-intervals for proportions (1-proportion z-intervals). Supplemental reading in chapter 19 of the textbook is there if you need it.

• Notes [WEB] 7.1 - Confidence Intervals with Proportions | B&W PDF Version
• Blank copy of notes handout

Here are the homework problems for the first TWO blocks of the semester over today's material:

• HW #1 PROBLEMS (due Th/F, Jan 10/11)
• HW #2 PROBLEMS (due M/Tu, Jan 14/15)