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Probability / Statistics
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Not sure how to do this problem: "Researchers at a media company want to study news-reading habits among different age groups."
lu346
Mar 5, 2024
Replies
3
Views
155
Mar 5, 2024
Dr.Peterson
S
need help with calculating combinations and permutations
silly
Mar 4, 2024
Replies
2
Views
88
Mar 5, 2024
Dr.Peterson
E
When is a critical region necessary for hypothesis testing?
EdwardH115
Feb 29, 2024
Replies
1
Views
132
Mar 1, 2024
BigBeachBanana
K
Confidence interval question: I have a total of 3500 houses. I sampled 350 (10%) and found only 1 had a positive response....
Keith000001
Feb 28, 2024
Replies
1
Views
126
Mar 1, 2024
BigBeachBanana
L
Probability of seeing 11:11
LeeAllison
Aug 10, 2018
Replies
10
Views
9K
Feb 29, 2024
khansaheb
K
F
Help with Counting Problem 2.1: An exam has 15 questions: 8 true/false and 7 multiple choice.
fabaldoni
Feb 27, 2024
Replies
3
Views
129
Feb 27, 2024
fabaldoni
F
J
Hopefully a simple probability question: I have 35 apples, 13 are red and 22 are green. I have to pick 17 with a blindfold on.
Jammyd
Feb 21, 2024
Replies
5
Views
184
Feb 25, 2024
Jammyd
J
L
Is there an answer to this challenge via the use of creative, complex, and 100 % mathematical formula.
Lubi
Feb 21, 2024
Replies
1
Views
116
Feb 24, 2024
Lubi
L
A
Square distribution: Three points are randomly selected on a circle of radius R. They form an inscribed triangle with some area.
AlexShev
Feb 20, 2024
Replies
6
Views
185
Feb 23, 2024
AlexShev
A
M
Finding a marginal probability density (stuck at the integration)
MathNugget
Feb 23, 2024
Replies
3
Views
185
Feb 23, 2024
MathNugget
M
M
Calculating the mean of a sum of independent variables, with the same distribution, when the number of terms varies?
MathNugget
Feb 6, 2024
Replies
7
Views
389
Feb 23, 2024
MathNugget
M
R
A fairly simple probability question ( I think)
Rampuss
Feb 18, 2024
Replies
2
Views
152
Feb 22, 2024
Rampuss
R
M
Percentiles - getting mixed results when trying to find the 10th and 90th percentiles
mathy555
Feb 21, 2024
Replies
4
Views
172
Feb 22, 2024
mathy555
M
J
Correct way to report significant digits in measurements and their uncertainty (calculating stream density)
jones123
Feb 21, 2024
Replies
2
Views
132
Feb 21, 2024
Dr.Peterson
8
APPROACH TO: What is the probability of a football game ending with a score of 14 - 0 ?
850mph
Feb 14, 2024
Replies
11
Views
370
Feb 19, 2024
850mph
8
A
Mean and s.d of normal distribution? (The time taken for a randomly chosen student to complete the test is...)
apple2357
Feb 13, 2024
Replies
10
Views
400
Feb 14, 2024
blamocur
R
Probability of winning race: Each racer runs 100 yards. Each racer rolls to run between 3 and 10 yards....
rp405
Feb 14, 2024
Replies
0
Views
65
Feb 14, 2024
rp405
R
M
Fuzzy logic for expert medical system (probability of having a patient's covid)
MrAlex
Feb 10, 2024
Replies
0
Views
63
Feb 10, 2024
MrAlex
M
D
Standard Deviation: If IQ scores that range between 55-70 are three SD's below the mean, then why...
deannat506
Feb 9, 2024
Replies
0
Views
61
Feb 9, 2024
deannat506
D
J
coin flip (binomial) question: How many trials are needed to remove chance from being involved in these 4-flip all-heads 1/16 goal trials?
JDavid
Feb 7, 2024
Replies
0
Views
69
Feb 7, 2024
JDavid
J
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