Getting our test grades back today.
13 point curve on this test, which bodes poorly. Highest grade was apparently an 87. Somehow, I do not think that was me. On the bright side, we can drop one grade in this class. I had a 60 initially, 73 with the curve. Not good, but could be a lot worse.
Section 7. From here to the end of the semester is apparently going to be probability.
7.1 is Sample Spaces and the Assignment of Probabilities.
Probability math evolved out studies of gambling odds.
Probability is the study of experiments and their outcomes. Probability is how likely a certain outcome is to occur. An experiment in probability is any process with uncertain results which can be repeated. Common experiments in probability include flipping coins, rolling dice, and observing accidents across population groups.
Associated with experiment outcomes are sample spaces and events. A sample space is the set of all possible outcomes of the experiment. An event is a collection of outcomes of an experiment. A simple event is a single outcome of the experiment. A simple event is normally represented as e[subscript].
Page 367 has useful examples.
There is, in general, no single correct sample space for a given experiment. When in doubt, choose a sample space with more elements, rather than fewer elements.