As mentioned in class, I will provide sample problems for you to try in preparation to the Final exam. Although I cannot give solutions to them, the 201 markers/tutors will have access to them and will have solutions for those interested. That tutorial, which you voted on, will be hosted on sunday, December 6th from 5:00 - 7:00pm in SCHW156. As mentioned before, it will cost $10 for the session; however, given that they normally charge $15/hr you are getting quite a good rate.
To ensure that we thoroughly cover all the necessary material, Lab 4 will be restructured as a class and so we will only lightly talk about the material related to the lab - for those interested, I will post the lab material online later on - and continue w/ the course per usual. To get your lab mark, you must come to class on your indicated lab day. Sorry for the disappointment.
If you are still having some issues w/ the z/t rejection regions for some α, I will be running a tutorial THIS wednesday (December 2) from 5:30 - 6:30, with the possibility of extending to 7:30 if necessary. I would strongly recommend reading the "Reject or not reject..." post and if you still having problems, come see me in NH 151 starting at 5:30.
The question of rejecting the null (and risk committing a Type I error) or failing to reject the null (and risk committing a Type II error) is a ponderous thing, but as we have learned there are 3 methods by which we can come to the same conclusion.
Compare the test-statistic against some z (or t) value
Calculate a confidence interval and compare if the sample mean is contained within it, or
Compare the p-value against α.
All three are dependent upon α, although if our test statis...