Set Theory, Logic, Probability, Statistics Forum

Post thread
Join experts in discussion on Set Theory, Logic, Probability, Statistics topics. Fundamentals in Set theory, logic and proofs. Probability and statistics also. Homework help is available.
Graduate Counting the elements of a set of sets
  • · Replies 17 ·
Replies
17
Views
11K
Graduate What is the difference between class and set?
  • · Replies 3 ·
Replies
3
Views
8K
Graduate Help Me Out With These 2 Tough Questions
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad Ain't No Proof By Contradiction
  • · Replies 21 ·
Replies
21
Views
5K
Undergrad Permutation and combination problem
  • · Replies 14 ·
Replies
14
Views
9K
Graduate Calculating Probability and Profit for Drilling Wells: A Binomial Approach
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad People Who Like A or C: Subset of Those Who Don't Like B and C
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Statistics Question: Calculating P(B U D)
  • · Replies 25 ·
Replies
25
Views
4K
Undergrad Need help with statistics / distributions
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Let X be a set. A partition of X is a subset
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Do I have this definition right? (and a suprise bonus question on sequences)
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Understanding Proofs Involving Subsets
  • · Replies 22 ·
Replies
22
Views
6K
High School Understanding Probability: Mutually Exclusive, Independent, And/Or Problems
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Proving Dedekind Cuts for D = {x: x \in Q and (x \leq or x^2 < 2)}
  • · Replies 7 ·
Replies
7
Views
4K
Undergrad Likely Winner of Women's Shooting Contest
  • · Replies 9 ·
Replies
9
Views
2K
Undergrad Midterm Practice: Could some verify my proof
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Probability Density Function of two Resistors in Parallel
  • · Replies 4 ·
Replies
4
Views
5K
Undergrad Simulating Brownian Motion w/ Drift & Diffusion - Step-by-Step Guide for Excel
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Solving Problem with Marbles - David's Challenge
  • · Replies 12 ·
Replies
12
Views
3K
High School Average Deviations: Why is it Always Zero?
  • · Replies 2 ·
Replies
2
Views
5K
Undergrad Bijections result when the function is surjective and injective
  • · Replies 8 ·
Replies
8
Views
5K
Graduate What Is the Distribution of 2(X̄ - 10) / S?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Comparing Sample Means with Pooled Variance Estimate
  • · Replies 2 ·
Replies
2
Views
45K
Graduate Solving Choice Functions: Axioms, X={1,2,3}, Finding c:P(X)--->X
  • · Replies 19 ·
Replies
19
Views
4K
High School How Many Ways to Split Students and Combine Outfits?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Probability Density Function - Need Help
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Cartesian Product: \mathbb{R}^3
  • · Replies 7 ·
Replies
7
Views
4K
Graduate Are there sets that are not partitionable in certain ways?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Joint PDF of Random Variables X & Y -1 to 1
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Gaussian Random Variables Question
  • · Replies 1 ·
Replies
1
Views
5K
High School Mutually exclusive/independent events
  • · Replies 4 ·
Replies
4
Views
67K
High School Probablity of choosing the same number
  • · Replies 2 ·
Replies
2
Views
2K
Graduate How to prove the double containment argument for infinite operations with sets?
  • · Replies 2 ·
Replies
2
Views
4K
High School Can 12 People Share 3 Tables in 5 Days for Dinner?
  • · Replies 4 ·
Replies
4
Views
4K
Undergrad Combinations & Counting: Is There a Proven Formula?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate How Many Choice Functions Exist for Finite and Infinite Sets?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Autocorrelation, expectation, moment
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Theorem: Bijections & Axiom of Choice
  • · Replies 9 ·
Replies
9
Views
4K
Undergrad Combinations are just an application of the counting principle?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad What is the probability of a customer leaving a workshop happy?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Testing hypothesis and significance level
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad What is the confidence interval for a 100 ohm resistor with 10% tolerance?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate To show that equivalence classes of ker f are concentric circles
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Method of Moments: Solving For Theta
  • · Replies 1 ·
Replies
1
Views
2K
High School Understanding Functions: Puzzled by f(x) = sqrt(x)?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Calculating Ratios of Moments: Spatial Extent of Distribution
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Examples of Surjections from Uncountable Sets to Countable Sets
  • · Replies 15 ·
Replies
15
Views
4K
Graduate Finding Upper and Lower Bounds for Subsets in R and Q
  • · Replies 10 ·
Replies
10
Views
46K
High School If there is a box which has 7 red balls
  • · Replies 3 ·
Replies
3
Views
3K
Graduate The Universe/Set Theory Conflict?
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad Verifying R is an Order Relation on {1,2,3}
  • · Replies 10 ·
Replies
10
Views
3K
Undergrad Probability of Winning and Losing in a 3-Round Game
  • · Replies 6 ·
Replies
6
Views
2K
Graduate Generalized likelihood ratio test
  • · Replies 2 ·
Replies
2
Views
10K
Undergrad How many arrangements are possible
  • · Replies 13 ·
Replies
13
Views
6K
Graduate Bacteria Colony Distribution in a Nutrient Dish
  • · Replies 2 ·
Replies
2
Views
5K
Graduate How can the Metropolis-Hastings algorithm help simulate a Normal Distribution?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Stock Market Investor: Probability of Retirement as a Winner
  • · Replies 1 ·
Replies
1
Views
6K
Graduate Rao-Blackwells Theorem: Efficient Estimation Using Sufficient Statistics
  • · Replies 4 ·
Replies
4
Views
6K
Graduate Can X_n Converge to X in Probability if it Doesn't Meet Definitions 2 or 3?
  • · Replies 10 ·
Replies
10
Views
6K
Graduate Calculate E(XY) when X~N(0,1), Y=X^2~\chi^2(1)
  • · Replies 4 ·
Replies
4
Views
22K
Undergrad Calculating Probability with a Normal Distribution
  • · Replies 6 ·
Replies
6
Views
13K
Undergrad Calculating Number of Distinct x Tuples from a Set A
  • · Replies 31 ·
2
Replies
31
Views
11K
Undergrad Probability Formula for Testing Joe's Claim in a Statistics Class
  • · Replies 7 ·
Replies
7
Views
2K
High School What is the Probability of Getting More Heads than Tails in 4 Coin Tosses?
  • · Replies 7 ·
Replies
7
Views
2K
High School What is Set Theory and How is it Used in Science?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Various stuff, mostly about sets
  • · Replies 7 ·
Replies
7
Views
2K
High School What do I need on the final to get an A in the class?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Probability Axioms: Deriving Version 2 from Version 1
  • · Replies 3 ·
Replies
3
Views
4K
Undergrad What is the probability of choosing at least one defective calculator?
  • · Replies 6 ·
Replies
6
Views
3K
Undergrad First-order logic : repesenting graphs
  • · Replies 35 ·
2
Replies
35
Views
8K
Graduate Second-order and Fixed-point Logic: Describing Graphs
  • · Replies 3 ·
Replies
3
Views
3K
High School Craps Statistics: Win/Loss/Point Odds Explained
  • · Replies 2 ·
Replies
2
Views
11K
Graduate Proving the Non-Equivalence of 'P V Q' to Any Horn Formula
  • · Replies 4 ·
Replies
4
Views
6K
High School Proving a Logical Statement: Puzzling Over Proving Pb and Not P1...
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Interesting probability problem
  • · Replies 8 ·
Replies
8
Views
3K
Graduate Proving Infinite Sigma-Algebra's Countable Disjoint Subsets
  • · Replies 3 ·
Replies
3
Views
7K
Undergrad Connectives Homework: Incomplete Set, Propositions P & Contradictions
  • · Replies 27 ·
Replies
27
Views
10K
Graduate Ordinal Exponentiation Comparison
  • · Replies 20 ·
Replies
20
Views
7K
Undergrad Calculating Probability of Sixth Die Face on Nth Consecutive Throw
  • · Replies 13 ·
Replies
13
Views
5K
Graduate Is the Intersection of a Sequence in a Sigma-Algebra Also in the Sigma-Algebra?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Definitions in terms of truth-functions
  • · Replies 17 ·
Replies
17
Views
4K
Undergrad What is the conditional probability of P(X > 0.2 | X < 0.6)?
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Method of moments and integration
  • · Replies 1 ·
Replies
1
Views
8K
High School Four tires to mount on a car these can be mounted
  • · Replies 3 ·
Replies
3
Views
2K
Graduate How can I improve my understanding of Maximum Likelihood estimators?
  • · Replies 2 ·
Replies
2
Views
3K
High School Denoting the Largest Member of a Set: Symbols & Techniques
  • · Replies 5 ·
Replies
5
Views
2K
Graduate Integration to d density function
  • · Replies 5 ·
Replies
5
Views
3K
Graduate What Intervals [a,b] Exhibit Both Open and Closed Properties in the Rationals?
  • · Replies 10 ·
Replies
10
Views
4K
Undergrad What is the minimum number of students for a likely win in a birthday bet?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Understanding Relations in Mathematics
  • · Replies 5 ·
Replies
5
Views
3K
High School Which Cup Will Be Hottest After 15 Minutes?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Are the Sets P and Q Equal? Investigating 3-Tuples in the Natural Numbers
  • · Replies 3 ·
Replies
3
Views
9K
Graduate Sme question about irrational numbers
  • · Replies 75 ·
3
Replies
75
Views
15K
Undergrad Why is Dedekind's Cut Used to Define Irrational Numbers?
  • · Replies 6 ·
Replies
6
Views
4K
Graduate Primitive recursive functions :mad:
  • · Replies 1 ·
Replies
1
Views
3K
Undergrad Upper Bound for IQ Scores Exceeding 130 Using Chebychev's Inequality
  • · Replies 9 ·
Replies
9
Views
11K
High School Which Is the Correct Half-Life Formula?
  • · Replies 1 ·
Replies
1
Views
22K
Graduate Combinatorics: How Many Vectors with Square Sum = K?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Show that the set of points on a line is equinumerous
  • · Replies 12 ·
Replies
12
Views
4K
Graduate How Do Arrows Function as Elements in Category Theory?
  • · Replies 15 ·
Replies
15
Views
4K