Day 12: STA205 - Introduction to Statistical Methods

• The Standard Normal Table of probabilities.

• Statcrunch instructions:
  • Load the Stop and Frisk Data for packet 2. Load it by "WWW address", and make sure to set the delimiter to "comma" (because this is a "csv" (comma-separated values) file.
  • Once the data is loaded, click on "Graph" or "Table".
  • Alternatively, you may want to join my "group" on Statcrunch. That way you can access the data more quickly. It's Sta205-Long, if you want to add yourself into that group.
  • For the IMath homework, you'll need the Bipolar Depression Study data. Same thing: Load it by "WWW address", and make sure to set the delimiter to "comma" (because this is a "csv" (comma-separated values) file (or get it from the group).

1. estimate parameter $p$ using statistic $\hat{p}$, with given confidence, and
2. discover the sample size needed to estimate $p$ with given confidence.

Let's remind ourselves about the distribution of $\hat{p}$:

Now in this case we don't have $p$. We want to find $p$. So how do we proceed? That's the subject of this packet.

• Please watch Brooke's Hypothesis test for the proportion at some point.
• The Standard Normal Table of probabilities.
• Interview with Richard Feynman