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Probability / Statistics
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G
In need of homework help: Suppose X, Y are jointly continuous random variables with f_(Y|X)(y,x) = x exp(-yx)...
Gator25
Dec 4, 2023
Replies
2
Views
198
Dec 4, 2023
blamocur
M
mean and variance: Let X be a discrete random variable such that X = 0 with probability 0.5 and X = 1 with probability 0.5.
Meera007
Dec 2, 2023
Replies
7
Views
321
Dec 4, 2023
BigBeachBanana
M
A confusing Q for beginners: Consider 6, 2, 4, 9, 1, 3, 5 as a population. Find the interquartile range.
metinerol
Nov 29, 2023
Replies
6
Views
423
Dec 2, 2023
Dr.Peterson
C
Fisher's exact test (In our study, we collected data through binary response questions (yes or no).)
Ceci
Dec 2, 2023
Replies
0
Views
167
Dec 2, 2023
Ceci
C
A
Normal Distribution Question: If 2 men, 1 woman are randomly selected, what is prob. maximum is exceeded?
Audentes
Nov 29, 2023
Replies
7
Views
408
Nov 29, 2023
blamocur
L
Quantitative Reasoning: all instructors in 3 office buildings are interviewed to determine their level of research interest.
LFed
Nov 26, 2023
Replies
3
Views
341
Nov 27, 2023
blamocur
J
probability struggles: "In a school of 340 students, 40% study Japanese, 75% study French and 20% study both,"
Josie123455
Nov 25, 2023
Replies
7
Views
330
Nov 26, 2023
khansaheb
K
P
Permutations question: book's soln to "How many diff. arrangements can be made if V is 2nd, Z never last?"
pazzy78
Nov 24, 2023
Replies
5
Views
408
Nov 24, 2023
pazzy78
P
S
How do I calculate how much the data deviates from one group to another in a table of percentages and standard errors?
shinsun
Nov 1, 2023
Replies
1
Views
256
Nov 23, 2023
khansaheb
K
D
Simple multi-part probability event: For a fly ball, assuming they were the only fielder, the left fielder havs a 50% chance of making the catch....
daratmp
Nov 15, 2023
Replies
6
Views
734
Nov 23, 2023
khansaheb
K
A
CFA: chi-square value is 0 but with degrees of freedom
axenox
Nov 21, 2023
Replies
1
Views
175
Nov 21, 2023
axenox
A
A
sample size in parallel multiple mediation analysis with 2 mediators and 3 covariate/control variables
AmyStill
Nov 20, 2023
Replies
0
Views
171
Nov 20, 2023
AmyStill
A
M
I dont get my mistake ; combinatory analysis
Marichou
Nov 13, 2023
Replies
7
Views
345
Nov 19, 2023
khansaheb
K
N
Probability problem of choosing a ball from a box
nguyen
Nov 12, 2023
Replies
11
Views
582
Nov 15, 2023
Dr.Peterson
M
Appropriate statistical test for "Does education level positively impact systolic blood pressure in men? in women?"
meghnac78
Nov 11, 2023
Replies
1
Views
217
Nov 12, 2023
khansaheb
K
F
Locked
Odds of a lottery win with 10,000 choices for numbers, players select 100 numbers per ticket
Fucko
Nov 7, 2023
Replies
14
Views
406
Nov 8, 2023
stapel
R
Possibilites of dropping 4 coins in 4 cups: chance (expectation?) of empty cups
RichardDL
Nov 2, 2023
Replies
9
Views
384
Nov 3, 2023
RichardDL
R
W
Is my solution correct? (We have a large number of items n>=10000 that we want to divide into one of four boxes.)
wiizz
Nov 1, 2023
Replies
1
Views
203
Nov 2, 2023
blamocur
F
Is this true? Assume that, for all real numbers k, there exists I such that p)X(x|I) = f(x-k).
FrederikDan
Oct 31, 2023
Replies
1
Views
208
Nov 2, 2023
blamocur
D
Calculate how many Number-Plates could exist with 3 pairs of numbers or letters
D3V
Oct 27, 2023
Replies
3
Views
286
Nov 2, 2023
blamocur
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