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Recent questions tagged probability
Webpage for Probability
0
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0
answers
1
Let X be the number of times you and your friend get the same outcome. Then X is distributed as
asked
Aug 11
in
Probability
by
worst_engineer
Active
(
4.1k
points)

7
views
probability
engineeringmathematics
0
votes
0
answers
2
Hashing
Suppose we used a hash fu action H(n) to hash n distinct elements (key) into an array T of length m. What is expected number of collision, if simple uniform hashing is used.
asked
Aug 9
in
DS
by
hrcule
(
251
points)

14
views
hashing
datastructure
uniformhashing
probability
0
votes
0
answers
3
Probability
We have applied Bernoulli equation to solve the answer. But, why the answer isn't C(90,5)÷C(100,5)?
asked
Aug 9
in
Probability
by
Arjun045
(
7
points)

15
views
binomialdistribution
probability
0
votes
1
answer
4
Made Easy TestEM
In the above question, they have said that set A has elements replaced. But in solution, they have considered the same set for P and Q. I am not able to get it. Please explain
asked
Aug 9
in
Probability
by
Ayush Upadhyaya
Boss
(
11k
points)

35
views
engineeringmathematics
probability
0
votes
0
answers
5
Probability by Blitztein
Martin and Gale play an exciting game of "toss the coin," where they toss a fair coin until the pattern HH occurs (two consecutive Heads) or the pattern TH occurs (Tails followed immediately by Heads). Martin wins the game if and only if HH occurs before TH occurs. Who is less or more likely to win?
asked
Jul 21
in
Probability
by
mohitjarvissharma
(
351
points)

46
views
probability
0
votes
1
answer
6
me test
A simple graph with n vertices is constructed by randomly and independently placing an edge between every two vertices with probability p. What is the expected no. of nodes with degree 2?
asked
Jul 17
in
Graph Theory
by
ronin_codex
(
7
points)

31
views
probability
graphtheory
expectation
simplegraph
0
votes
0
answers
7
Query regarding cumulative distribution function
asked
Jul 11
in
Mathematical Logic
by
Ayush Upadhyaya
Boss
(
11k
points)

23
views
probability
cumulativedistributionfunction
0
votes
2
answers
8
Uniform Random variableSelf Doubt
I was reading the uniform random variable from sheldon ross it is given that X is a uniform random variable on the interval $(\alpha,\beta)$ if the probability density function of X is given by $f(x)=\left\{ \frac{1}{\beta\alpha}\, if \, \ ... \lt \beta\\1 \,\, a \geq \beta\right\}$ My query is how they derived the distribution function from the density function?
asked
Jul 8
in
Probability
by
Ayush Upadhyaya
Boss
(
11k
points)

65
views
randomvariable
probability
0
votes
1
answer
9
What is the probability that a fivecard poker hand contains the two of diamonds and the three of spades?
asked
Jul 8
in
Mathematical Logic
by
sunil sarode
Active
(
1.3k
points)

69
views
probability
0
votes
0
answers
10
ProbabilitySheldon Ross(Self Doubt)
I was reading probability from Sheldon Ross and found below example. A purchaser of electrical components buys them in lots of size 10. It is his policy to inspect 3 components from a lot and to accept the lot if all the 3 are nondefective. If 30 percent of ... why they have multiplied it with $\frac{3}{10}$ in the first part and $\frac{7}{10}$ in the second?
asked
Jul 7
in
Probability
by
Ayush Upadhyaya
Boss
(
11k
points)

82
views
probability
sheldonross
randomvariable
0
votes
1
answer
11
ProbabilitySheldon Ross
An ordinary deck of 52 playing cards is randomly divided into 4 piles of 13 cards each. Compute the probability that each pile has exactly 1 ace.
asked
Jul 6
in
Probability
by
Ayush Upadhyaya
Boss
(
11k
points)

58
views
probability
sheldonross
+1
vote
0
answers
12
interview IIsc
Given a deck of 10 cards numbered 1 to 10. Select 3 cards one by one. Find the probability that selected cards is in increasing order. Eg : {1, 5, 7} or {8, 9, 10} etc
asked
Jul 1
in
Probability
by
Rishav Kumar Singh
Active
(
2.2k
points)

82
views
probability
permutationsandcombinations
+1
vote
1
answer
13
self doubt
Raj tossed 3 dices and their results are noted down then what is the probability that Raj gets 10? I know the simple way to count the total favorable number of condition divide by (6^3). But it is timeconsuming to solve in the examination to count one by one favorable condition. So, solve by some short trick and give a generalized the formulae.
asked
Jun 13
in
Numerical Ability
by
Raj Kumar 7
Active
(
1k
points)

55
views
probability
+1
vote
1
answer
14
Mission IIT Screening Test
In a group of $11$ people what is the probability that at least two people have birthday on same day ?
asked
Jun 11
in
Probability
by
Naveen Kumar 3
Active
(
1.4k
points)

310
views
generalaptitude
numericalability
probability
0
votes
2
answers
15
probability ques
asked
Jun 11
in
Probability
by
Sambit Kumar
Active
(
4.1k
points)

66
views
probability
0
votes
1
answer
16
Gate_2019_Mock_Paper
Please explain
asked
Jun 7
in
Algorithms
by
Harikesh Kumar
Active
(
1.4k
points)

34
views
algorithms
datastructure
probability
strings
0
votes
2
answers
17
Sheldon ross Conditional probability
asked
Jun 6
in
Mathematical Logic
by
Prateek Raghuvanshi
Loyal
(
5.3k
points)

92
views
sheldonross
probability
0
votes
0
answers
18
Random
There are 6 pairs of black socks and 6 pairs of white socks.What is the probability to pick a pair of black or white socks when 2 socks are selected randomly in darkness. My thoughts: Since there have asked for probability to pick a "pair", we must consider those ... 6C1)/ 24C2 + (6C1 * 6C1)/ 24C2 = 6/23 Which is the correct approach and why? Why am I getting different results?
asked
Jun 5
in
Combinatory
by
Warlock lord
Active
(
3.4k
points)

33
views
probability
0
votes
0
answers
19
Made easy test
Consider Ramesh purchase a product of Patanjali. The manual on it states that the lifetime $T$ of product is defined as the amount of time (in years) the product works properly until it breaks down, satisfy following equation : $$P(T \geq t) = e^{t/4}, \text{for all } t \geq 0$$ The probability that it breaks down in $3^{rd}$ year is ______. (Upto $2$ decimal places)
asked
May 31
in
Probability
by
saumya mishra
Active
(
1.2k
points)

73
views
engineeringmathematics
probability
0
votes
2
answers
20
Probability
The chances that doctor A will diagnose a disease X correctly is 60%. The chances that a patient will die by his treatment after correct diagnosis is 40% and the chances of death by wrong diagnosis is 70%. A patient of doctor A, who had disease X, died. The chances that his disease was diagnosed correctly is ________%.
asked
May 24
in
Probability
by
srestha
Veteran
(
92k
points)

121
views
probability
engineeringmathematics
+3
votes
1
answer
21
Quick Sort Algorithm
Let $0<α<.5$ be some constant (independent of the input array length $n$). What is the probability that, with a randomly chosen pivot element, the Partition subroutine produces a split in which the size of the smaller of the two subarrays is $≥α$ times the size of the original array? 1. $1  2*\alpha$ 2. $\alpha$ 3. $1  \alpha$ 4. $2  2*\alpha$
asked
May 23
in
Algorithms
by
Shailin Shah
(
109
points)

75
views
algorithms
probability
quicksort
0
votes
0
answers
22
Probability Density Function
Given a probability density function $\frac{1}{x}$. Value exists in the interval $\left ( 2,3 \right )$ Can this pdf has existence outside this range?
asked
May 18
in
Probability
by
srestha
Veteran
(
92k
points)

58
views
probability
engineeringmathematics
0
votes
3
answers
23
#cdssampleTest
One in two hundred people in a population have a particular disease. A test is developed for the disease. The test gives a false positive $3\%$ of the time (i.e. reports that a person has the disease even when he/she does not), and a false ... disease even when he/she does). Rahul takes the test and the report comes positive. What is the probability that Rahul has the disease?
asked
May 17
in
Probability
by
parulk
Junior
(
529
points)

134
views
engineeringmathematics
probability
+1
vote
1
answer
24
CMI 2018 Objective
Suppose Kn be the number of strings having n X's and n Y's such that in all the prefixes of a string the number of X's is greater than the number of Y's. Now suppose you are standing at an edge of a swimming pool. You have a bag of n red and n blue balls.Now you are ... the probability that you will not get wet. A) Kn / (2nCn) B) n Kn / (2nCn) C) Kn / (2n)! d) n kn / 22n
asked
May 16
in
Probability
by
Sammohan Ganguly
(
435
points)

98
views
probability
usercmi2018
usermod
0
votes
1
answer
25
Regarding Preparation
I know this question has been asked many times, but yeah. I am weak in calculus and linear algebra and have never studied probability properly. Now according to internet suggestions, I should read Kreyzig or BS Grewal, but I will most probably want ... time for GATE 2019 should i watch lectures of Gilbert Strang, Stats 110 and calculus textbook, or should i stick to kreyzig?
asked
May 11
in
Calculus
by
mohitjarvissharma
(
351
points)

83
views
engineeringmathematics
calculus
linearalgebra
probability
preparation
+1
vote
2
answers
26
Modification of GATE question
A coin tossed 3 times 1) if output at last two toss is $HT$ then stop tossing 2) if output of last two toss is $TT$ then toss again and go to step 1 or step 3 3) if output of last two toss is $TH$ or $HH$ then toss again and goto step 2 What will be probability, that at last the coin will stop tossing?
asked
May 9
in
Probability
by
srestha
Veteran
(
92k
points)

121
views
probability
0
votes
0
answers
27
IIT M Written : Probability
An experiment is performed $n$ times, in each of which an event $X$ may occur with a probability $p$. Determine$ E[ \overline{X}]$ and $Var( \overline{X})$, where $\overline{X} $is the complement of the event $X$
asked
May 7
in
Probability
by
Sourajit25
Junior
(
825
points)

73
views
writtentest
iitmadras
probability
expectedvalue
+1
vote
2
answers
28
Doubt
Suppose we are playing a game.You have to choose 1 out 3 doors.Behind 1 lucky door ,we have 1 million dollars.You picked 1 st door.But i opened the 3rd door and found nothing.Now,if i give you another chance ,will you change your choice? (Use probabiliy estimates to answer)
asked
May 6
in
Probability
by
Angkit
Active
(
3.8k
points)

115
views
probability
0
votes
2
answers
29
Bayes theorem
This is extended form of Bayes theorem Can somebody explain (or can prove), how from 1st line 2 line came?
asked
May 5
in
Probability
by
srestha
Veteran
(
92k
points)

100
views
probability
conditionalprobability
engineeringmathematics
+2
votes
1
answer
30
IISc CDS(MTech R)
There are 12 pair of shoes, what is the probability that atleast one complete pair of shoes are present if 4 shoes are selected at random?
asked
May 3
in
Probability
by
Hakuna Matata
(
351
points)

168
views
iisc
cds
probability
mtechr
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