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Recent questions and answers in Probability
0
votes
0
answers
Made easy booklet
Bag contains 5 black, 2 red and 3 white marbles. Three marbles are drawn simultaneously. Find probability that they're of different colour
asked
2 days
ago
in
Probability
by
farazbukhari0
(
5
points)

21
views
selfdoubt
0
votes
0
answers
Previous year question
In this previous year question https://gateoverflow.in/179371/, can someone PLEASE explain why is it wrong to say that if i have probability of success = $\frac{1}{26^{10}}$ ... ? Please give a proper reason like, the reason why we can't say the answer is B is because checking is a dependent event.
asked
Jan 9
in
Probability
by
reboot
(
5
points)

27
views
probability
0
votes
0
answers
MATHS MADEEASY PRACTICE WORKBOOK
A student is taking a multiple choice exam in which each question has 5 possible answers exactly one of which is correct.If the student knows the answer he selects the correct answer. Otherwise he selects one answer at random from the 5 possible choices. ... question the student gets the correct answer? I AM GETTING 0.76 IN SOME SOURCES IT IS GIVEN 0.718 PLEASE SEE
asked
Dec 20, 2020
in
Probability
by
eyeamgj
(
25
points)

22
views
workbook
0
votes
1
answer
Probability Binomial Distribution NCERT Doubt
In a hurdle race, a player has to cross 10 hurdles. The probability that he will clear each hurdle is 5/6 . What is the probability that he will knock down fewer than 2 hurdles?
answered
Dec 2, 2020
in
Probability
by
zxy123
(
2.9k
points)

25
views
probability
+1
vote
1
answer
Probability ncert doubt
Find the probability that at most 2 heads and at most 2 tails occur when 4 coins are tossed simultaneously?
answered
Dec 2, 2020
in
Probability
by
zxy123
(
2.9k
points)

41
views
probability
selfdoubt
0
votes
0
answers
Probability NCERT Book Doubt
The probability of number of defectives in a lot is 35%. There are 4 items taken out with replacement. Find the probability that none of the items are defective?
asked
Nov 30, 2020
in
Probability
by
Dheera
(
22
points)

32
views
probability
0
votes
0
answers
Bayes Theorem self doubt
A card from a pack of 52 cards is lost. From the remaining cards of the pack, two cards are drawn and are found to be both diamonds. Find the probability of the lost card being a diamond.
asked
Nov 27, 2020
in
Probability
by
Dheera
(
22
points)

15
views
probability
selfdoubt
+1
vote
1
answer
TIFR 2020 From System Science
Balls are drawn one after the other uniformly at random without replacement from a set of eight balls numbered 1,2,...,8 until all balls drawn what is expected number of balls whose value matched their ordinality (i.e their position in the order in which ... that the ith ball is drawn at the ith draw ? now can you use linearity of expectation to solve the problem
answered
Nov 27, 2020
in
Probability
by
zxy123
(
2.9k
points)

21
views
probability
0
votes
1
answer
NIELIT NIC scientistB 2020 setC ques 75
Let X1,X2,...X50 be independent random variables following N(0,1) distribution. Let Y=$\sum_{i=1}^{50} X_{i}^{2}$ and E(Y)=a and Var(Y)=b. Then the ordered pair (a,b) is: (50,100) (50,50) (25,50) (25,100)
answered
Nov 26, 2020
in
Probability
by
ankitgupta.1729
(
229
points)

61
views
randomvariable
+1
vote
1
answer
#GATE_MA 2018
answered
Nov 3, 2020
in
Probability
by
zxy123
(
2.9k
points)

20
views
randomvariable
0
votes
1
answer
BS Gerewal engineering mathematics
hey guys, what is meant by the statement “cards are drawn in succession” . does it means whether one by one the cards were drawn OR all the cards were drawn at once any help is really appreciated….
answered
Oct 30, 2020
in
Probability
by
SarathBaswa
(
633
points)

15
views
discretemaths
combinatory
counting
0
votes
2
answers
online search
There are 10 pairs of shoes in a cupboard, from which 4 shoes are picked at random, then find the probability of at least one pair.
answered
Oct 22, 2020
in
Probability
by
ayush.5
(
99
points)

42
views
selfdoubt
0
votes
0
answers
MADEEASY WORK BOOK
THE AVERAGE DEVIATION OF ALL THE ITEMS IN THE DATA FROM ZERO IS EQUAL TO………… ARITHMETIC MEAN MEDIAN, MODE, STANDARD DEVIATION , VARIANCE I THINK ITS MEAN……? IS IT CORRECT?
asked
Oct 20, 2020
in
Probability
by
eyeamgj
(
25
points)

16
views
0
votes
2
answers
About Random Variable
From where to read random variable beacause in gate there are lot of tricky question asked Specially from uniform ,normal ,poisson,exponential random variable. So please give me some hint
answered
Oct 9, 2020
in
Probability
by
StoneHeart
(
735
points)

16
views
0
votes
0
answers
Exponential Distribution (probability)  self doubts
asked
Sep 21, 2020
in
Probability
by
Dipankar Giri
(
5
points)

16
views
probability
0
votes
0
answers
Uniform Distribution (Probability)Self doubts
What is Uniform Distribution in Probability?? Please discuss it with example!!! Thank you!!!
asked
Sep 21, 2020
in
Probability
by
Dipankar Giri
(
5
points)

13
views
probability
0
votes
1
answer
ROSEN question on Probability
find p(F I E) If p(E I F) = 1/3, p(E I F’) = 1/4, and p(F) = 2/3, where E and F are events from a sample space S. Is p(F I E) 11/12?
answered
Sep 15, 2020
in
Probability
by
Ehraz Hasan
(
366
points)

44
views
+1
vote
1
answer
Gravner Probability Exercise
answered
Sep 7, 2020
in
Probability
by
StoneHeart
(
735
points)

48
views
probability
0
votes
0
answers
made easy # q num 20
Two fair dices are rolled and the sum r of the numbers are turned up is considered then find pr(r=8r/4 is an integer.
asked
Aug 29, 2020
in
Probability
by
k.saurav
(
5
points)

10
views
0
votes
2
answers
#GATE_PI_2018
In a service centre, cars arrive according to possion distribution with a mean of two cars per hour. The time of servicing a car is exponential with a mean of 15 minutes. The expected waiting time(in minutes) in the queue is (A)10 (B)15 (C)25 (D)30 how to solve this type of question?
answered
Aug 27, 2020
in
Probability
by
suvradip das
(
113
points)

58
views
+1
vote
4
answers
probability basic
In a family with 4 children, what is the probability of a 2:2 boygirl split?
answered
Aug 23, 2020
in
Probability
by
SarathBaswa
(
633
points)

240
views
probability
0
votes
1
answer
conditional probability self doubt
in given probability question how can we assure that , we have to apply here conditional probability P(A/B) or multiplication rule P(A&B)?
answered
Aug 16, 2020
in
Probability
by
Arkaprava
(
717
points)

27
views
probability
0
votes
1
answer
Self Doubt: Eng. Math
what is median of $max\left ( x,y \right )$? Will it be $0$ or $\frac{x+y}{2}$?
answered
Aug 15, 2020
in
Probability
by
Arkaprava
(
717
points)

49
views
descrete
engineeringmathematics
0
votes
2
answers
Combinatorics and Probability
Six people including A,B, and C, form a queue in a random order (all 6! orderings are equiprobable). Consider the event "A precedes B in the queue". (Again this event does not mention C or other people in the queue. It happens when A is ... not require that B is the next after A, some people could be between A and B.) What is the probability of this event?
answered
Aug 15, 2020
in
Probability
by
manas_kulkarni
(
1
point)

237
views
conditionalprobability
permutation&combination
discretemaths
probability
0
votes
1
answer
A first course in probability
Let A denote the event that the midtown temperature in Los Angeles is 70◦F, and let B denote the event that the midtown temperature in New York is 70◦F. Also, let C denote the event that the maximum of the midtown temperatures in New York and in Los Angeles is ... ,P(B) = .4, and P(C) = .2, find the probability that the minimum of the two midtown temperatures is 70◦F.
answered
Aug 13, 2020
in
Probability
by
Arkaprava
(
717
points)

40
views
probability
0
votes
1
answer
A first course in probability by Ross
Let A denote the event that the midtown temperature in Los Angeles is 70◦F, and let B denote the event that the midtown temperature in New York is 70◦F. Also, let C denote the event that the maximum of the midtown temperatures in New York and in Los ... ,P(B) =.4, and P(C) = .2, find the probability that the minimum of the two midtown temperatures is 70◦F.
answered
Aug 13, 2020
in
Probability
by
Arkaprava
(
717
points)

75
views
0
votes
1
answer
A first course in probability by Ross
A basketball team consists of 6 frontcourt and 4 backcourt players. If players are divided into roommates at random, what is the probability that there will be exactly two roommate pairs made up of a backcourt and a frontcourt player?
answered
Aug 13, 2020
in
Probability
by
Arkaprava
(
717
points)

70
views
probability
0
votes
2
answers
#A First Course In Probability Sheldon Ross #self_doubt
answered
Aug 13, 2020
in
Probability
by
SarathBaswa
(
633
points)

21
views
selfdoubt
probability
0
votes
1
answer
Made easy test series flt1 probability
Consider the set X = {1 ,2, 3 …. 15}. Two elements ‘a’ and ‘b’ are chosen at random from S. The probability that the elements chosen satisfy a + b = 16 is equal to ________. (Upto 2 decimal places)
answered
Aug 12, 2020
in
Probability
by
Arkaprava
(
717
points)

50
views
madeeasytestseries
probability
0
votes
1
answer
self doubt question, No source of question
a random variable $x$ follows binomial distribution with $mean = 2$ times of variance and $mean + variance = 3$, then $p(x) = 3$ is...
answered
Aug 12, 2020
in
Probability
by
Arkaprava
(
717
points)

28
views
probability
binomialdistribution
0
votes
1
answer
Self doubt Independent events
In probability, in case of 3 events, why do we need to check pair wise independence rather than just mutual?
answered
Aug 11, 2020
in
Probability
by
Arkaprava
(
717
points)

34
views
probability
engineeringmaths
independent
events
0
votes
2
answers
Conditional Probablity
Conditional probabilities Remark. In your answers to all three questions of this section, give an explanation as to why you believe your answer is correct. Marks will not be awarded for answers with numbers not accompanied by any explanation or ... that a student studies Computer Science, and the probability that the student is male provided that he studies Computer Science
answered
Aug 11, 2020
in
Probability
by
SarathBaswa
(
633
points)

26
views
probability
bayes
0
votes
1
answer
Combinatorics and Probability
Six people, including A,B, and C, form a queue in a random order (all 6! orderings are equiprobable). Consider the event "B is between A and C in the queue". What is its probability? (The order of A and C can be arbitrary, but B should be between them).
answered
Aug 11, 2020
in
Probability
by
SarathBaswa
(
633
points)

32
views
permutation&combination
conditionalprobability
discretemaths
probability
combinatory
0
votes
2
answers
TCS MockVita 2020 , Lazy Student
There is a test of Algorithms. Teacher provides a question bank consisting of N questions and guarantees all the questions in the test will be from this question bank. Due to lack of time and his laziness, Codu could only practice M questions. There ... problems. Codu can't solve the question he didn't practice. What is the probability that Codu will pass the test?
answered
Aug 11, 2020
in
Probability
by
SarathBaswa
(
633
points)

121
views
probability
tcs
0
votes
1
answer
What are the relevant chapter in Gravner for Probability ?
answered
Aug 10, 2020
in
Probability
by
Arkaprava
(
717
points)

16
views
gravner
probability
0
votes
1
answer
MIT OCW Probability Assignment 02
1. Most mornings, Victor checks the weather report before deciding whether to carry an umbrella. If the forecast is rain, the probability of actually having rain that day is 80%. On the other hand, if the forecast is no rain, the probability ... rain if it was during the winter? What is the probability that the forecast was rain if it was during the summer?
answered
Jul 24, 2020
in
Probability
by
aryashah2k
(
2
points)

41
views
conditionalprobability
0
votes
3
answers
Expectation : Self Doubt
There is a bag containing 5 white and 5 black balls. You repeat the following experiment till you see a white ball : take a ball uniformly at random out of the bag. If it is white, stop. Otherwise, put it back in the bag. What is the expected number of times you will need to draw a ball from the bag ?
answered
Jun 22, 2020
in
Probability
by
Nikhil_dhama
(
151
points)

154
views
discretemaths
expectation
0
votes
1
answer
#self doubt why is the method wrong to solve the problem
answered
Jun 13, 2020
in
Probability
by
Himanshu Kumar Gupta
(
9
points)

19
views
combinatory
cards
probability
0
votes
1
answer
GATE GURU TEST SERIES MATHS
A cancer institute has a testing methodology. The methodology produces 95% positive result, also 10% rate of falsepositive(i..e showing a non cancer person as a cancer affected patient). If there are 0.5% of the people have cancer. Suppose a person is classified as a disease affected person, what is the probability that the person is really have cancer? _______________
answered
May 31, 2020
in
Probability
by
shaktipratap
(
5
points)

290
views
engineeringmaths
+1
vote
1
answer
GATE2020CS17 Video Solution
Let $\mathcal{R}$ be the set of all binary relations on the set $\{1,2,3\}$. Suppose a relation is chosen from $\mathcal{R}$ at random. The probability that the chosen relation is reflexive (round off to $3$ decimal places) is ______.
answered
Apr 23, 2020
in
Probability
by
amitkhurana512
(
35
points)

17
views
gate2020cs
numericalanswers
probability
videosolution
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