Archive for April, 2008

Derivation in paper - calculus - How?

Wednesday, April 30th, 2008

Milky: Hi all the paper is Pybus(2000) An integrated framework for the inference of viral population history from reconstructed genealogies wanted some help with this U = exp(-\int^{gi+ti}_{x In the paper they solve U for gi and get … Share and Enjoy: These icons link to social bookmarking sites where readers can ...

Word Problems In Algebra! Help Me Please!

Wednesday, April 30th, 2008

Jeffrey Morton: Guys, please help me! Kindly answer the questions which you think is easy. PLEASE! PLEASE! ALSO POST THE NUMBER/S YOU ANSWERED AND THEIR CORRECT SOLUTIONS! GOOD LUCK AND THANK YOU SO MUCH! 1. Train A leaves a station 1/2 hour ahead of … Read more

Why are so many Texas 8th graders failing TAKS math?

Wednesday, April 30th, 2008

stevelk: The state’s high-stakes math exam continues to stump many eighth-graders, with one out of four students failing on their first try this year, the Texas Education Agency announced Tuesday. … “I think we’ve just had a larger, … Share and Enjoy: These icons link to social bookmarking sites where readers can ...

bivariate poisson - probability

Wednesday, April 30th, 2008

Austen: 1. The problem statement, all variables and given/known data Let {Mi(t), t >= 0 }, i=1, 2 be independent Poisson processes with respective rates λi, i=1, 2, and set N1(t) = M1(t) + M2(t), N2(t) = M2(t) + M3(t) … Share and Enjoy: These icons link to social bookmarking sites where ...

Fewer Fifth-Graders Pass Math TAKS on First Try

Wednesday, April 30th, 2008

mathtutoringhelps: Students in those two grades must pass the math and reading exams to be promoted to the next grade. Children who didn’t pass the fifth- and eighth-grade math exam will have two opportunities to retake the test. Read more

Track Trigonometry

Wednesday, April 30th, 2008

savetherobot: Let’s pull the trigger! Read more

[ap-stat] Practice Exam #16 standard deviation

Wednesday, April 30th, 2008

unknown: [this message has not yet arrived] Share and Enjoy: These icons link to social bookmarking sites where readers can share and discover new web pages. Read more

[ap-stat] Answering Multiple Choice Questions on AP Exam

Wednesday, April 30th, 2008

unknown: Since students don’t lose points for leaving an answer blank, but lose .25 points for answering an answer incorrectly on the multiple choice portion, Read more

Re: [ap-stat] Practice Exam #16 standard deviation

Wednesday, April 30th, 2008

mathtutoringhelps: The rule for combining variances of two RV’s only requires that they are independent. We don’t need (and don’t have!) Read more

[ap-calculus] Annoyed by College Board Decision

Wednesday, April 30th, 2008

unknown: I am behind the pace for review for the AP exam (due to weather delays and school cancellations in my part of the country), and I wanted to send. Read more