Stat 2000: Tips for Assignment 10
Published: Fri, 03/16/12
I have not finalized the date for the final exam seminar yet, but I am thinking it will be on Sunday, April 15, 2012 from 9:00 am to 9:00 pm. Please reply and let me know what you think about this date. I don't want to offer it on Saturday, April 14 because I expect there will be exam conflicts and I will not be able to offer it any sooner than the 15th for the same reason.
Please click
this link for more information about the seminar if you
are interested:
If you ever want to look back over a previous tip I have sent, do note that all my tips can be found in my archive. Click this link to go straight to my archive:
Did you miss my Tips on How to Do Well in this Course? Click here
Did you miss my Tips for Assignment 9? Click here
If you are taking the course by Distance/Online (Sections D01, D02, etc.), click here for my tips for your Assignment 10.
If you are taking the course by classroom lecture (Sections A01, A02, etc.), click here for my tips for your Assignment 10.
Tips for Assignment 10 (Sections A01, A02, etc.)
There is no Assignment 10 for the classroom lecture sections.
Study Lesson 7 in my book, if you have it, to prepare for this assignment.
Questions 1 to 4 are
Lesson 7 stuff, and I am confident you will have no problem doing them
once you study the lesson. You may want to review how to interpret a
confidence interval in Lesson 1 of my book (remember, though, that these
are confidence intervals for proportions or the difference between
proportions, not means), and review how to interpret a P-value in Lesson
2 of my book (again keeping in mind you are hypothesizing about
proportions, not means). Note that, by LCL and UCL, they mean,
respectively, Lower Confidence Limit and Upper Confidence Limit. Which
is to say, they want the lower and upper limits of your confidence
interval. As I discuss in question 1 of my lesson, make sure you can tell the difference between being asked for the mean of X and the mean of p-hat, the sample proportion.
Question 2 is very similar to my question 1 parts (c) and (d). Question 2(c)
requires an alpha/beta table. Re-read the section called "Errors in
Hypothesis Testing Revisited" in Lesson 6 (my Stats 2 book, volume 1). However, you will use a p-hat bell
curve, as taught in Lesson 7, to find the appropriate probability.
Question 4 requests interpretations of your P-value and confidence interval. Re-read the appropriate sections of Lesson 1 and Lesson 2 of my book, but remember that this is about the difference in proportions, not the mean.