This week we will cover the last two formulas on the Interactive Formula Sheet. They let us do hypothesis tests to find out if there is a significant difference between two different population proportions and to make a confidence interval for how big the gap is.
Goal. To introduce the two-sample hypothesis test for proportions.
Step 1. This is chapter 23 in the book. As always, it is a good idea to read the textbook!
Step 2. These notes are a quick outline chapter 23: Two sample inference for proportions
Step 3. Try this workshop: Drug testing
Step 4. Here is a video with my solutions and explanation: YouTube
Step 5. I've posted the homework for this week. You should try to solve all of the problems by Friday. On Friday, I'll post a form where you can submit some of your solutions online.
Goal. To use the two-sample confidence interval for proportions.
Step 1. Try this workshop: Climate change opinions
Step 2. Here is a video with my solutions: YouTube
I'll be available at 11am and 1pm for Zoom office hours. Let me know if you are interested and I'll send you a link to the Zoom meeting.
Goal. Turn in the homework for week 12 and use today for catch up and review.
Step 1. Here is the link to turn in this week's homework: GoogleForm
Step 2. Here is a list of suggested review problems for Midterm 3 next week: Midterm 3 review. Also, here is the formula sheet that will be included with midterm 3: Midterm 3 formula sheet
If I have time, I'll try to post some additional review problems over the weekend that don't require the textbook.