Day 25: STA205 - Introduction to Statistical Methods

Last time Next time

Announcements:
- During class time I'll be on Zoom, at https://nku.zoom.us/j/7057440907, as well as checking my email regularly.
  Feel free to check in with questions or concerns.
- We are onto our last packet! Packet 11: Intro to Two Sample Inference
- Your Packet 10 Imath assignment due tomorrow, Wednesday, 4/22.
- Your final Imath assignment due date is Wednesday, 4/29
- I thought that was an interesting comment in an article about antibodies in folks from having been infected by Covid-19: Van Kerkhove said they needed to look carefully at the way the studies were being carried out. "A number of studies we are aware of in pre-print have suggested that small proportions of the population [have antibodies]," she said. These were "in single digits, up to 14% in Germany and France". "It is really important to understand how the studies were done." [ael: my emphasis]
  That would include asking how they found the people to test. Was it at random or were they blood donors, who tend to be healthy adults? They would also need to look at how well the blood tests were performed.
  Was it at random? We ask this question in class a lot. It's important; it's important as we try to understand this virus transmission, and how to cope with it.
- Anyone with a zero score on a midterm will be required to take their final exam on Zoom with me. Details prior to the final....
  Make sure that you know how to Zoom.
Today:
- Today we begin Packet 11: Intro to Two Sample Inference. I encourage you to fill out your packet along with these videos, as usual. It would be good to do the calculations as we go, too -- don't rely on imagining that you'll be able to do them when the moment arrives.
Links:
- The Standard Normal Table of probabilities.
- Here's Prof. Buckley's formula sheet, which you'll receive for the exams.

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