Alright, alright--I'll go easy on you this weekend. But it's gametime as soon as you walk in this classroom on Monday. I can't wait--it's statistical inference time!
Your homework this weekend is to complete the 5 multiple choice questions provided in class. These will count as part of your TEST GRADE. Each will be worth 2 points--1 point for the answer, 1 point for showing your work.
SO IF YOU DON'T SHOW WORK, YOU"LL AT BEST GET A 50!
Number 16 Hint: The standard deviation in this question is difficult to find. First, you need to find the separate standard deviations for the Holiday and Dynamite mints using the binomial standard deviation formula. (square root of npq). Then, you need to use our rules for variances to get the standard deviation of these two mints together.
Friday, February 11, 2011
Thursday, February 10, 2011
Thursday HW: STUDY!
EXTRA CREDIT OPPORTUNITY: This is very short notice and I apologize, but tomorrow I'll be heading to the underclassmen math classes to promote the wonderful world of AP mathematics at our school. If you remember when I came to your class, I had some letters written by current students for incoming students.
You can earn some test points for tomorrow (+5) if you write a letter to incoming students (for Stats and Calc next year), the only issue is it must be emailed to me tonight. The letter should be 1/2 to a full page (max). Simply talk about your feelings on AP Statistics--would you recommend it? Is it interesting? How's the teacher? How hard is the course and how much work is it? Is it a lot different than your previous math classes? Do you think this will better prepare you for college? What are some advantages of taking AP in general? Please be honest--don't only say good things, mention any fallbacks as well.
Calculus students--I could use some Calc letters as well, so feel free to write about Calculus rather than Stat (I'll still give you extra credit), or a combination of the two.
I've attached some questions below for you to check out--work on these and prepare yourself for tomorrow's test!
Page 384 # 35, 38, 40, 16, 18, 6
Key:
6.) b. mean = 3.44, c. mean = 17.20
16.) a. mean=2.25 b. SD=1.26
18.) b. mean=89 c. SD=260.54
38.) a. mean=37.6, SD=3.7 b. z = -2.07, prob = 0.019
40.) a. Profit = 120B+150D-200 b. mean =928, SD=187.45 d. Independence must be assumed
Page 402: #4, 7, 36, 37
Key:
4.) mean = 100, SD = 9.95; check success/fail, bernoilli trials, 10% condition; since this is nearly 10 SD above the mean the probability is essentially zero
You can earn some test points for tomorrow (+5) if you write a letter to incoming students (for Stats and Calc next year), the only issue is it must be emailed to me tonight. The letter should be 1/2 to a full page (max). Simply talk about your feelings on AP Statistics--would you recommend it? Is it interesting? How's the teacher? How hard is the course and how much work is it? Is it a lot different than your previous math classes? Do you think this will better prepare you for college? What are some advantages of taking AP in general? Please be honest--don't only say good things, mention any fallbacks as well.
Calculus students--I could use some Calc letters as well, so feel free to write about Calculus rather than Stat (I'll still give you extra credit), or a combination of the two.
I've attached some questions below for you to check out--work on these and prepare yourself for tomorrow's test!
Page 384 # 35, 38, 40, 16, 18, 6
Key:
6.) b. mean = 3.44, c. mean = 17.20
16.) a. mean=2.25 b. SD=1.26
18.) b. mean=89 c. SD=260.54
38.) a. mean=37.6, SD=3.7 b. z = -2.07, prob = 0.019
40.) a. Profit = 120B+150D-200 b. mean =928, SD=187.45 d. Independence must be assumed
Page 402: #4, 7, 36, 37
Key:
4.) mean = 100, SD = 9.95; check success/fail, bernoilli trials, 10% condition; since this is nearly 10 SD above the mean the probability is essentially zero
36.) a. 0.5929 b. 0.4071 c. 0.0529 d. 0.0025
Tuesday, February 8, 2011
Tuesday HW!
Page 398:
21, 25, 29, 31
I need to see lots of work for credit; if you just have a bunch of answers, 0 it is.
21, 25, 29, 31
I need to see lots of work for credit; if you just have a bunch of answers, 0 it is.
Monday, February 7, 2011
Check out this UConn article...
Here's a link to the article written by Stephanie Summers for the UConn "Spotlight" if you're interested. Crytal--you're in the picture! Maybe you'll be famous!
http://spotlight.education.uconn.edu/2011/carofano-odds-are-with-all-american-stats-teacher/
http://spotlight.education.uconn.edu/2011/carofano-odds-are-with-all-american-stats-teacher/
Monday's HW
Tonight you should complete the problems identified in class on our powerpoint slides. I've provided the answers below--if you want full credit, just the answers won't cut it! You need to show work!
1. "O negative blood" We expect to examine 16.667 donors; P(first universal donors is one of first four people) = 0.21925
2. "Suppose 20 donors..." b. We can assume independence because 20 donors is less than 10% of all blood donors. c. Mean = 1.2, St. Dev = 1.06; d. P(2 or 3 universal donors) = .311
3. "Colorblind Males"
1. "O negative blood" We expect to examine 16.667 donors; P(first universal donors is one of first four people) = 0.21925
2. "Suppose 20 donors..." b. We can assume independence because 20 donors is less than 10% of all blood donors. c. Mean = 1.2, St. Dev = 1.06; d. P(2 or 3 universal donors) = .311
3. "Colorblind Males"
- On average, a person should expect to ask 12.5 people to find one colorlind male.
- P(no colorblind among first 4 men) = 0.7164
- P(first CB on 6th person) = .0527
- P(CB on 1st or 2nd or 3rd....or 9th or 10th) = .5656
4. Olympic archer
- P(first bull on 3rd shot) = 0.032
- P(at least one bull) = 0.999936
- P(first bull on 4th or 5th) = 0.00768
- P(exactly 4 bullseyes) = 0.24576
- P(at least 4 bullseyes) = 0.90112
- P(at most 4 bullseyes) = 0.34464
5. Can we use probability models...we'll discuss in class
6. "Left Handed people"
- P(first lefty is 5th) = 0.0745
- P(some lefties) = 0.502
- P(lefty is 2nd or 3rd) = 0.2115
- P(exactly 4 lefties) = 0.0012
- P(at least 3 lefties) = 0.0179
- P(no more than 2 lefties) = 0.982
Monday, January 31, 2011
Monday/Tuesday HW
Your homework is on the back of our expected value/variance outline:
Tonight: page 381: 5,7,19,23,25,32
Tomorrow (EVEN IF WE HAVE A SNOW DAY!): Page 382: 8,18,27,33,37
Tonight: page 381: 5,7,19,23,25,32
Tomorrow (EVEN IF WE HAVE A SNOW DAY!): Page 382: 8,18,27,33,37
Friday, January 28, 2011
Back to the grind...
Alright, here we go 3rd quarter....
Your homework is as follows: read chapter 16, and complete the AP problem distributed in class--you can also find this with our classroom powerpoints entitled, "Juana and Carroll."
Good luck! The AP problem is your first grade of the quarter so do a good job! And then, do an even better job (if possible) on Monday's reading quiz!
Your homework is as follows: read chapter 16, and complete the AP problem distributed in class--you can also find this with our classroom powerpoints entitled, "Juana and Carroll."
Good luck! The AP problem is your first grade of the quarter so do a good job! And then, do an even better job (if possible) on Monday's reading quiz!
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