1,230 reputation
317
bio website andrew-christianson.github.io
location Los Angeles, CA
age 23
visits member for 3 years, 3 months
seen Dec 14 at 21:03

Dec
12
revised Simple probability problems
deleted 293 characters in body
Dec
12
revised Probability cut-off
added 90 characters in body
Dec
12
comment Probability cut-off
Nice catch, I was playing around with sample size and proportion to get the effect I wanted for the example and it looks like I forgot to change the numbers all the way through. My intention was n=500, p=.5, I think everything matches now. You're right on the summand too, mine underestimates the probabilities by a bit.
Dec
12
revised Probability cut-off
deleted 2 characters in body
Dec
12
comment Use Standard Deviation to find Percentage above a certain point
@dilip thanks for the reference, I appreciate it.
Dec
12
revised Use Standard Deviation to find Percentage above a certain point
added 280 characters in body
Dec
12
comment Use Standard Deviation to find Percentage above a certain point
@henry I'm not familiar with that adjustment, or at least the term. I'm only just finishing up a probability theory course. Link?
Dec
12
revised Use Standard Deviation to find Percentage above a certain point
added 3 characters in body
Dec
12
answered Use Standard Deviation to find Percentage above a certain point
Dec
12
comment Use Standard Deviation to find Percentage above a certain point
@nick what mixedmath is saying is that saying something is Normal implies that the data is continuous. Saying a discrete sample space is Normal has little meaning. Moreover, even if your data were continuous, saying they're normal without specifying the parameters (mean and SD) has even less meaning. Perhaps you could supply a bit more context? Where did this problem come from? How do you know the data are well approximated by a normal distribution? What are the parameters of that distribution?
Dec
11
answered Prove $\int_{a}^{\infty}f'(x)/f(x)\sin(f(x))dx$ converges
Dec
11
awarded  Suffrage
Dec
11
comment How can I find the square root using pen and paper?
Yea, certainly seems the most practical. I first saw it on exam question beginning "you're on a desert island with only a 4-fucntion calculator and need to calculate $\sqrt{13}$
Dec
11
comment How can I find the square root using pen and paper?
Yup, slipped one key to left. Thanks!
Dec
11
revised How can I find the square root using pen and paper?
edited body
Dec
11
awarded  Citizen Patrol
Dec
11
answered inference rules application (introduction / elimination): two examples
Dec
11
comment What is an efficient nesting of mathematical theorems?
Great question. Better minds than I will have actual answers for you; I just wanted to suggest that you cross-post this to mathoverflow as well. That site is geared toward research-level mathematics, and may have other answers for you.
Dec
11
answered probability textbooks
Dec
11
revised Running times comparison
Corrected formating