HW for Monday: In preparation for Tuesday's test, the MINIMUM assignment is to work four problems (your choice) from the Chapter Review. This means that at least four problems have to be completed correctly. For instance, if problem 28 had been in the review section, your answer would include a complete hypothesis test or confidence interval--not just your opinion.
HW for Friday: 12.25, .26, and .28.
March Madness: post your NCAA men's basketball brackets at CBSSportsline with the Linnerstats bracket. The password for the bracket is just what you'd expect, gogators. If you are a bracket rookie, this means that you predict the winners of the 63 games in the NCAA basketball championship tournament. The software at CBSSportsline makes it really easy. You have to work fast. . . the brackets close soon.
HW for Thursday: Write up the inferences (hypothesis test and confidence interval) you generated today using the fluffy pom poms. Make your answers complete and correct. First period, please be prepared to meet me in our temporary location after our brief homeroom first thing Thursday.
HW due Wednesday: Complete write-up (PHANTOMS) of the Skittles hypothesis you generated in class. (Run a 1-proportion z-test on a large-enough sample of Skittles. The size of the sample depends on what you consider a "success.")
HW due Tuesday, March 18th: 12.13, 12.15, 12.16, 12.17. Please note: The answers in the back of the book for problem 13 used 0.33 as the value for 1/3. Obviously, this is not going to give you the "correct" answer. Please use 1/3 instead of their estimate and realize that your answers will be a little different from theirs, but yours will be correct! You can check your answers using the STAT TEST 1-PROP Z TEST on the calculator. The observation based on your results will not change just because you used a slightly different input.
The test on Chapter 12 will be next Tuesday, the 25th.
We're finally back where we began, with inferences for proportions. You should complete your compare/contrast study guide (that you created from scratch) where you compare the formulas, language, and assumptions of each of the three chapters. The headings are z-procedures for means, t-procedures for means, and z-procedures for proportions. Know how to justify each of the formulas for standard deviations in the two-proportion inferences algebraically.
HW: Using the combined data from two sleeves of mini M&Ms (as you will find in the holiday section of the grocery store), test the null hypothesis P = 1/6, where p represents the true proportion of brown M&Ms (the best ones!). Perform the complete test, using PHANTOMS as a guide. For those who were absent, we're talking about the little tiny plastic sleeves of M&Ms that come in a blue bag (about 17 to the bag). There are around 50 M&Ms in each sleeve unless you get short-changed.
Saturday, March 22, 2008
Monday, March 10, 2008
Chapter 11 Statistical Inference Part II (t-procedures)
HW for Wednesday, March 12: Find 10 problems from chapter 11 that have not been assigned yet and complete them. If you find problems that you cannot do, mark those, but they do not count toward your ten. YOUR TEST IS THURSDAY.
HW due Tuesday, March 11: 11.31 and 11.32. Keep the data from today's class in your calculator so we can finish the process tomorrow. Remember, the test is Thursday.
HW due Thursday, March 6: 11.10, 11.15. 11.17
HW due Friday, March 7 (Coach Rinehimer's birthday!!!): 11.16. 11.19, 11.20, 11.27, 11.30 (These are all related!) Good job with the pasta and grip labs today. My hypotheses were that there were 104 pieces of pasta on average in a cup and that the difference between right and left hand squeeze strengths was 7 pounds on average. Your job was to (1) collect data, (2) perform a hypothesis test using your results, and (3) construct a confidence interval for the average or averge difference. EACH of you is responsible for knowing how to do all the steps of these investigations.
HW due Monday, March 10: 11.26, 11.28
Your test on Chapter 11 will be Thursday, March 13th.
Happy Centennial!!!
W.S. Gosset's paper (remember, the brewer who developed the t-distribution?)was published in Biometrika 100 years ago THIS MONTH!
A link to the paper (of course he did not publish online. . .).
HW due Tuesday, March 11: 11.31 and 11.32. Keep the data from today's class in your calculator so we can finish the process tomorrow. Remember, the test is Thursday.
HW due Thursday, March 6: 11.10, 11.15. 11.17
HW due Friday, March 7 (Coach Rinehimer's birthday!!!): 11.16. 11.19, 11.20, 11.27, 11.30 (These are all related!) Good job with the pasta and grip labs today. My hypotheses were that there were 104 pieces of pasta on average in a cup and that the difference between right and left hand squeeze strengths was 7 pounds on average. Your job was to (1) collect data, (2) perform a hypothesis test using your results, and (3) construct a confidence interval for the average or averge difference. EACH of you is responsible for knowing how to do all the steps of these investigations.
HW due Monday, March 10: 11.26, 11.28
Your test on Chapter 11 will be Thursday, March 13th.
Happy Centennial!!!
W.S. Gosset's paper (remember, the brewer who developed the t-distribution?)was published in Biometrika 100 years ago THIS MONTH!
A link to the paper (of course he did not publish online. . .).
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