Super Bowl Weekend!

Go Broncos? Or Seahawks?

This weekend your homework deals with conditional probability and tree diagrams.

On Monday I will check that you've completed the worksheet we started in class. If you were absent or lost it, the problems are below.
(Hint: Those who drink moderately or abstain from drinking are both considered "non-bingers," and thus have the same probability of being involved in an alcohol related auto accident.)

I will check the problems in our textbook on Wednesday. So, in other words, here's Monday night's homework (you can save the three I mentioned in class for Monday night):

Monday's HW: Page 365: 33, 35, 37, 39, 43

And don't forget...our chapter 15 vocab quiz is Monday!

1.) A private college report contains these statistics:

70% of incoming freshmen attended public schools
75% of public school students who enroll as freshmen eventually graduate
90% of other freshmen eventually graduate

Create a tree diagram…

·         What percent of freshmen eventually graduate?

·         What is the probability that a student who attended public school graduates?

·         What is the probability that a student who attended a non-public school graduates?

·         What is the probability that a given graduate attended public school?

·         What is the probability that a student who did not graduate attended a non-public school?

·         Are graduation and public/other schooling independent? Explain.

2.) Binge Drinking and Its Risks:

•         Binge Drinking:

▫         Men: 5 or more drinks in a row

▫         Women: 4 or more drinks in a row

•          Study by Harvard School of Public Health:

▫         44% of college students binge drink

▫         37% drink moderately

▫         19% abstain

•         American Journal of Health Behavior:

▫         17% of binge drinkers 21 – 34 involved in alcohol related auto accident

▫         9% of nonbingers have been in such accidents

1. What’s the probability a randomly selected college student will be involved in an alcohol related accident?
2. What’s the probability a randomly selected college student will be a binge drinker who’s had an alcohol-related auto accident?
3. What’s the probability a randomly selected college student will abstain and be related in an alcohol related accident?
4. If we know a student has had an alcohol-related accident, what’s the probability he/she is a binge drinker?
5. Suppose we randomly select a student who has not been in an accident. What is the probability he/she is a binge drinker?

Stats HW!

Tree diagrams tomorrow!

Tonight, please complete the following:

Page 364: 17, 21, 23 

**Period E: You also need to complete the 2 Venn diagram problems provided in class; if you didn't grab them, you can find them in the blog post below (from  yesterday).

See you all tomorrow! Enjoy your extended afternoon!

Tree Diagrams Tomorrow!

I'm proud of how well we've done with probability thus far! Keep up the great work!

Tonight, please complete the following:

• The AP problem on the back of your quiz
• The 2 Venn Diagram problems provided in class (Period E: you did not get these, but you'll have to do them--so the problems are below if you want to get them done tonight!)

AP Problem:

A tire manufacturer designed a new tread pattern for its all-weather tires. Repeated tests were conducted on cars of approximately the same weight traveling at 60 miles per hour. The tests showed that the new tread pattern enables the cars to stop completely in an average distance of 125 feet with a standard deviation of 6.5 feet and that the stopping distances are approximately normally distributed.

   (a)    What is the cutoff for the 70^th percentile of the distribution of stopping distances?

   (b)   What is the probability that a car will stop in a distance greater than 130 feet?

   (c)    What is the probability that at least 1 car out of 5 randomly selected cars in the study will stop in a distance greater than 130 feet? 

    Venn Diagram Problems:

       1.) A representative sample of random pages of our text was taken, with the following result:

•48% of pages had some kind of data display•27% of pages had an equation•7% of pages had both a data display and an equation–Display these results in a Venn diagram.–What is the probability that a randomly selected sample page had neither a data display nor an equation?–What is the probability that a randomly selected sample page had a data display but no equation?

2.) Police report that 78% of drivers stopped on suspicion of drunk driving are given a breath test, 36% a blood test, and 22% both tests. What is the probability that a randomly selected DWI suspect is given:
–A test?
–A blood test or a breath test, but not both?–Neither test?

More Probability!

More probability, yo!

Enjoy it!

Tonight, please complete the following:

Page 362: 3,5,7,11,15,19

(Math) Quiz Tomorrow!

We made it through Monday!

Tonight, please complete the following for homework (especially you absent people!):

Page 342: 21, 29, 31 (don't worry about 21c where it asks you to find the probability in a different way)
Page 363: 1

Also, remember--quiz tomorrow! Whether you were here or at the assembly, you are taking the quiz! It's quiz C--you had quiz A and quiz B to study, so use those to guide you!

**If you were absent you also have to make up the chapter 14 vocab quiz**

Math Homework!

This weekend, please complete the Quiz A/Quiz B worksheet provided in class. If you can do all of this, you're in good shape for probability thus far! Feel free to email with any questions; I'll give you all the answer key on Monday.

Also, don't forget--chapter 14 vocab quiz on Monday! The following could be on your quiz...

• Random, Probability, Independence, Law of Large Numbers, Law of Averages, Complement Rule, Complement, Disjoint/Mutually Exclusive, "Something Has to Happen" Rule, Outcome, Event
• **We did NOT talk about DISJOINT events in class...but this word IS on the quiz...so study it!

In case you forgot your worksheet, lost it, or were absent, I've uploaded the Quiz A/B worksheet under our classroom resources...

Math Homework!

Tonight, please complete the following for homework...

Page 339: 17, 19, 23, 27

*For number 23, the wording about the M&M's is a bit confusing....there are NO purples (this is the breakdown before purple was introduced); there are 20% red, 20% yellow, 10% blue, 10% green, and 10% orange.

Enjoy!

I decided that I'm NOT going to force you to come review your midterm via a test grade. Of course you are more than welcome to still come, and I will still have review sessions to go over the midterm.Tomorrow I want to pass back your free-response sections along with the rubric I used to grade them--if I forget, please remind me in class!

Actual Math Homework!

Hopefully you all aced today's test to start off the quarter with an "A"!

Tonight, please do your best to complete the following (and it's the first homework, so you know I'm checking...):

page 339: 7, 9 (think: what should probabilities add up to?), 11, 12, 13ab, 14ab

See you all tomorrow!

Test Tomorrow!

Remember, we still have to take our mid-year assessment before we get back into probability: here are the topics for your first test grade of the quarter:

• Find mean, median
• Use a regression equation to find a predicted value
• Shape of a distribution
• Compare two data points using z-scores
• Find the mean of two combined samples
• Know how measures of center/spread are affected
• Find a predicted/actual value from a scatterplot
• Correlation
• Identify explanatory, response variable
• Use Normal model to find a percentile
• Interpret slope/yint
• Methods of data collection--which allows us to determine cause/effect?
• Measures of center and spread

Exam Grades and Next Week!

We've made it through the first semester! Time to start learning some probability and statistical inference! Be ready to work and to learn quickly; this class is going to get a little tougher, as we have to cover 1 chapter per week to finish in time for the AP exam!

We will take the same pre-test (that we took in September) on Tuesday. This will count as the first test grade of the quarter! You will only have 20 minutes to complete the test. No need to stress to much, it's basic knowledge--but it might not be a bad idea to review a little bit! (all multiple choice, way easier than the midterm)...

About that midterm....well, we have some work to do. The grades are posted below. If you earned an "A," you're projected to score a "5" on the AP Exam; if you got a "B," that corresponds to a "4" and so on. This was a good test--now we know that we definitely have to do some more studying and be better prepared! We'll talk more about the exam itself (a little) on Tuesday.

Exam Week!

Thank you to those of you who came after today to study! And thank you to those of you who came Saturday! I appreciate all of your hard work!

I'm excited...this is a great opportunity for us to take a mock AP exam and see how well prepared we'll be in May! Make sure you study!

Don't forget to bring in your stamps!

It wouldn't be fair to the people who took the exam today to post any more information about the test, so sorry--you're on your own from here! You can, of course, email with any questions that arise while you're studying.

I will not have any exam grades until everyone has taken the exam. I need to see all of the scores to establish the cutoff scores for each "AP Exam Score." I will post all of your grades on Thursday or Friday (on the blog).

In case you're curious, on Tuesday we'll start with a quick mid-year assessment (the same pre-test we took in September). Then, we'll start probability.

In order for us to finish the course by the AP exam, we have to finish 1 chapter each week. So be ready to work hard until May 9th! We'll be moving quickly!

Halfway done with homework for the year...(almost)

We're almost halfway!

Tonight, please complete the review sheet I provided in class yesterday (it starts with some data about Andover and Hebron). Of course I'm checking this, it's our last homework assignment of the quarter!

A few other things to keep in mind...

• STAMPS ARE DUE TOMORROW!
• Same deal...count them up, write the total on the front. I will randomly choose 5 people from each class to double check, so make sure your count is correct!
• Be here at 7:15 Saturday if you're coming
• After school review Monday is at noon (until about 3?--you can leave when you like/need to)

See you all tomorrow for some last bits of review! Enjoy the afternoon!

DON'T DO THAT WORKSHEET TONIGHT...JUST STUDY!

Upon further reflection, you were right Natalie. Definitely just study tonight.

I will check the worksheet provided in class (Normal model and stuff) on FRIDAY. If you finish your test early (in class), you will have time to start this worksheet. Tonight, just worry about studying and ending the quarter with an "A" on this test.

Good luck!

So again....only homework tonight is to study! (Sorry for the confusion....and thanks Natalie for making me realize I was a moron about the homework :) )

The Big Push to Midterms...

Here we go--next week is a big week for us! It gives us a nice chance to test ourselves/practice for the upcoming AP exam in May. Make sure you study, and put in 100% effort.

Tonight's Homework:

Page 321: 25, 33, 37, 41

Saturday Permission Slips Due Thursday:

I changed my mind--the permission slip does not count as a homework for me, so you just need to bring it back to one of your AP teachers (I think). Get it to me (or someone else) by Thursday.

• Be at EHHS by 7:25; bus leaves at 7:30
• Breakfast at Windsor High School from 8 - 8:30
• 3 1 hour sessions ending around 11:30
• Return to EHHS around noon

Test Thursday:

matching vocab and 8 multiple choice (if we have time after the test we'll do some more review)

Need More Stamps?

Check out the statistics rap songs linked to the right--the "Stat Rap" and the "Stat Rap (Remix)." As you listen, write down any lines (not just one word, write out the entire line of the rap) that reference or are related to statistical concepts we've learned thus far. For every 3 you write down, you'll get a stamp. You can do this to earn up to 10 extra stamps if you like!

...

Every time I try to enter a title this site tells me there's an error....

Anyway, here's what you need to know:

Homework:

• Study! We have our chapter 13 vocab quiz tomorrow or Tuesday (the next time I see you)
• Two AP Problems will be checked on Tuesday: 2007 Form B #3, and 2007 #2 (Even if you were absent I expect you to do these! Use the link below to find the questions!)

http://apcentral.collegeboard.com/apc/members/exam/exam_information/8357.html#name07

After our vocab quiz (whenever I see you) we'll do some more practice with experiments/blocking to wrap up this unit. Then we'll have a test (matching vocabulary and multiple choice) and review a little for the rest of the week!

As always, feel free to email with any questions!

If you'd like to get a head start, this homework assignment will be assigned on Tuesday:

Tuesday's Homework: Page 321: 25, 33, 37, 41