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Basic Probability and Statistics

Basic Probability, Statistics, and Combinatorics
Ackbach
  • Sticky
Extremely Important Article on Statistics
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1
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8K
Joppy
J
S
Probability
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1
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63
Country Boy
C
L
Probability
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1
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714
Country Boy
C
A
Help calculating a z score
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1
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335
GJA
G
A
Word problem for winning percentage
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1
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233
Country Boy
C
C
Correlation
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0
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154
cajswn
C
E
Online course for probability and statistics with emphasis on python
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0
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91
Emekadavid
E
J
Real Estate math word problem help
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3
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211
Country Boy
C
M
Monty Hall Problem with 4 doors
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0
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89
MichaelLiu
M
M
How many triangles can be made given these points? Combinations and Permutations
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3
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126
Opalg
Opalg
evinda
What will the minister do?
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1
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125
Klaas van Aarsen
Klaas van Aarsen
evinda
Relative variance
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1
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103
Klaas van Aarsen
Klaas van Aarsen
M
Permutation Problem SWITZERLAND
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3
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176
Opalg
Opalg
K
I need help. x1 + x2 + x3 + x4 = 12 with at least one variable equal or greater than 5
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0
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420
Kayton
K
T
Risk and Odds of daily production
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0
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182
throwawayo_k
T
Y
Squared Error of Estimation
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0
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235
YossiM
Y
D
I need help. Have no idea how to solve any os these.
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4
Views
383
Country Boy
C
J
Probability: Find the number of ways to form 4-digit numbers >3000
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4
Views
952
Joe_1234
J
Dhamnekar Winod
Expected value and equality to sums
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4
Views
341
Dhamnekar Winod
Dhamnekar Winod
H
What is the probability that at least 5 was shown for 5 or more times?
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4
Views
235
MarkFL
M
karush
Expected value for the total number of points awarded on any toss of coins
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6
Views
503
karush
karush
karush
find probability it will rain both days
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3
Views
287
HallsofIvy
H
I
Probability distribution: Estimate the size of the fox population
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2
Views
203
Istar
I
I
In how many ways can Ben paint his apartment?
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4
Views
240
Istar
I
I
Discrete Probability: What is the expected value of cup of coffee to the customer
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5
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269
MarkFL
M
C
What is the probability that exactly 8 of them are over the age of 65
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1
Views
655
HallsofIvy
H
C
Find the probability of 1 tire with low air pressure P (1)
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0
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300
Crowbarr
C
H
Tom claims that there is over a 60% chance that you can win a 10 or 5 prize. Is his claim correct
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1
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1K
HallsofIvy
H
M
possible combinations for six digit license plates, numbers 0-9 and letters a-z.
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1
Views
4K
joypav
J
Monoxdifly
Find the number of ways of giving 31 cupcakes to 5 students each receives odd number of cupcakes to each one
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3
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2K
Klaas van Aarsen
Klaas van Aarsen
Monoxdifly
the number of possible permutations for the assessment
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2
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1K
Monoxdifly
Monoxdifly
P
Dice throwing probabilities
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8
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3K
Peterconfused
P
R
One is blindfolded to choose 11 socks randomly, find the probability of choosing 11 reds in a row
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3
Views
6K
Gaffer
G
G
How many white balls in the container must be at least so that the probability that two black balls were drawn was < 23/30
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2
Views
1K
ghostfirefox
G
Monoxdifly
[ASK] Probability of Getting the Main Doorprize
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3
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2K
Monoxdifly
Monoxdifly
S
Probability calculation of dependent events with limitations
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0
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1K
Slyv3r
S
S
Confused About Mutual Exclusivity with More Than Two Events
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13
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2K
Ackbach
Ackbach
L
Pricing (VAT)
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1
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1K
HallsofIvy
H
M
Find the probability all 5 dice rolls are the same
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2
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1K
marcadams267
M
L
Probability of Having a Disease
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1
Views
698
HallsofIvy
H
Monoxdifly
[ASK] A die is tossed 100 times. What's the expected frequency that the number appears will be 4
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2
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1K
Monoxdifly
Monoxdifly
A
Probability of cancer because of microwaves
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1
Views
727
HallsofIvy
H
M
help explaining unrounding concepts
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3
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1K
Klaas van Aarsen
Klaas van Aarsen
T
how many people will be in the top 10% in at least one examinations
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2
Views
610
Tomacork
T
V
Number of ways to color a grid
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0
Views
459
Viking
V
W
Which class has the greatest frequency and which has the least frequency
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1
Views
1K
HallsofIvy
H
Z
Need to find the probability of receiving 8 pairs of identical boxes choosing from 8 items 16 times?
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1
Views
784
HallsofIvy
H
K
Find the probability of AT LEAST three 6s occurring when rolling five six-sided dice all at onc
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1
Views
2K
HallsofIvy
H
S
Using ratios to calculate weights in a weighted average (or not)
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0
Views
1K
steveistumped
S
M
Boxplot question
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1
Views
819
Jameson
Jameson
J
Find the probability where two throws are the same (a double) when throwing a 6-sided die 5 times
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1
Views
2K
Opalg
Opalg
P
If he chooses randomly, how many ways can Akio form his starting lineup
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1
Views
1K
MarkFL
M
F
What are the chances that someone in the shop during those two hours was a student who came in for office hours
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2
Views
681
f666
F
S
Probability of a random subset of Z
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1
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1K
Evgeny.Makarov
E
C
Conditional probability given 2 scenarios: probability of meeting male and a female in the shop
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1
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2K
Country Boy
C
L
Levels of Measurement, Basic OLS Regression Questions
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1
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1K
lomaxbridges
L
R
null hypothesis and alternate hypotheses
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1
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1K
Jameson
Jameson
J
How to exclude combinations for defined sequences?
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1
Views
961
steep
S
T
Statistics Problem: Which class has the greatest frequency and which has the least frequency
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1
Views
1K
Klaas van Aarsen
Klaas van Aarsen
S
Statistics using pie chart: how many more students are there in biology compared to physics
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3
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2K
topsquark
topsquark
T
Calculating the expected value and variance of continuous multi-variable function
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1
Views
726
Country Boy
C
X
What would the probability be for the 11th flip to be the same as 10th flip
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3
Views
902
xNICK
X
R
Two screws are inspected and the first is found to be good. What is the probability that the second is also good
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2
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1K
Ram123
R
Dhamnekar Winod
Rule of sum and rule pf product: How many distinct sums are possible using from 1 to all of the 15 cards
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3
Views
3K
Dhamnekar Winod
Dhamnekar Winod
Asawira Emaan
How many different arrangements can be formed of the word "equation" if all the vowels are to be kept together?
Replies
3
Views
1K
Country Boy
C
J
What’s the increased probability for a masters student given that there are 3 lottery attempts
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2
Views
975
Jeny George
J
J
guessing a three digit pin code from an 8 key keypad
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2
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2K
Jameson
Jameson
J
Calculating a weighted mean?
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3
Views
1K
Greg
Greg
J
probability that whenever a single order is selected what is the probability that this probability is from restaurant A or C or
Replies
1
Views
1K
skeeter
skeeter
J
Finding the probability probability that 4 adults selected at random have health insurance
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1
Views
476
Country Boy
C
S
Find the probability that in a random sample of 4 shots, he will miss the bullseye at least 3 times
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1
Views
2K
Country Boy
C
S
Given probability density function find its cumulative distribution function
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1
Views
3K
Evgeny.Makarov
E
D
The most basic of questions, sorry. Paper Rock Scissors
Replies
1
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932
Klaas van Aarsen
Klaas van Aarsen
A
The emission rate changes such that the probability of 0 or 1 emission in 4 seconds becomes 0.8. What is the new rate?
Replies
3
Views
1K
Klaas van Aarsen
Klaas van Aarsen
R
Is there statistically significant evidence against the manufacturer's claim ? Why or why not?
Replies
1
Views
958
Country Boy
C
R
What is the probability that students will be arranged in order from shortest to tallest?
Replies
1
Views
1K
Wilmer
W
R
If all of the delegates shake hands with one another, how many handshakes are exchanged?
Replies
1
Views
632
Country Boy
C
R
Linear Correlation
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1
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2K
Klaas van Aarsen
Klaas van Aarsen
P
Calculation of probability with arithmetic mean of the sum of random variables
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1
Views
1K
Klaas van Aarsen
Klaas van Aarsen
R
Likelihood of things happening on with regularity depending on initial probability
Replies
1
Views
887
Jameson
Jameson
J
Compare between the different approaches of forecasting and advise by return the one you suggest
Replies
5
Views
1K
Jason000000
J
C
trying to understand how to formulate null and alternative hypotheses
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1
Views
1K
Wilmer
W
J
What is the probability that the ball was labeled
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6
Views
1K
Wilmer
W
R
What is the probability that she selects none of those containing errors
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2
Views
1K
Country Boy
C
R
Find the probability that among 7 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating
Replies
2
Views
1K
Country Boy
C
R
find the probability that all 7 witnesses would pick the same person.
Replies
2
Views
923
Wilmer
W
R
find P(at least 1 woman)
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2
Views
4K
Country Boy
C
R
Find P(spade or face card or 3 or club)
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4
Views
844
rainbow
R
R
How many ways can the captain arrage her schedule?
Replies
1
Views
689
MarkFL
M
C
Calculating total possible matching combinations remaining
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0
Views
1K
charles1234
C
M
[SOLVED] Expected value of steps
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3
Views
1K
MATHias
M
S
Calculating overall percentage/probability from multiple categories?
Replies
3
Views
3K
Country Boy
C
A
  • Locked
Stats question on premiership goals
Replies
5
Views
2K
Greg
Greg
N
Pr of exactly one dice showing 2
Replies
9
Views
1K
Wilmer
W
L
Chance performance on a yes/no task where no is correct 2/3 of the time?
Replies
6
Views
2K
ltuff1
L
C
Find P(Q') B) P(Q union R) C) P(R')
Replies
2
Views
1K
Country Boy
C
A
show that the probability that he will never stops gambling is zero
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0
Views
731
Akea
A
T
Probability of winning dice game
Replies
3
Views
1K
Opalg
Opalg
C
Population formula part 1: Birth
Replies
2
Views
833
caters
C
N
How many different ways can these roles be filled if exactly one of Dale and Margaret gets a part?
Replies
1
Views
1K
tkhunny
T
A
Construct the 99% confidence interval estimate
Replies
1
Views
750
MarkFL
M
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