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Recent questions in Probability
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Random variables,
Uniform,
Normal,
Exponential,
Poisson
and
Binomial distributions.
Mean, median, mode and standard deviation.
Conditional probability and Bayes theorem
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Previous GATE
0
votes
0
answers
1
expectation doubt
Given a stick with n joints. The stick is dropped from certain height. During the fall, each joint breaks with probability p independent of other joints. What is the expected number of pieces into which the stick breaks ? Also, what is expected number of substicks of length =3.
asked
2 days
ago
in
Probability
by
parulk
Junior
(
529
points)

16
views
#probability#expectation
0
votes
0
answers
2
Probability
Parcels from sender to receiver pass sequentially through 2 post office.Each post office has a probability 1/5 of loosing an incoming parcel,independently of all other parcels.Given that a parcel is lost, the probabilty that it was lost by the second post office is....??
[closed]
asked
3 days
ago
in
Probability
by
vnk572
(
7
points)

24
views
0
votes
0
answers
3
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
4
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
5
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
6
Probability
how do we get the answer ${\frac{1}{2}}^{k/5}$
asked
Aug 5
in
Probability
by
aditi19
(
201
points)

11
views
0
votes
0
answers
7
Testbooktestseriesprobability
asked
Aug 1
in
Probability
by
Prateek Raghuvanshi
Loyal
(
5.3k
points)

37
views
variance
+1
vote
1
answer
8
geeks for geeks
In a bunch of 13 Tshirts only one is of Medium size, which is correct fit for the searching person. Each time wrong size is picked, the person throws it away and pick the next Tshirt. What is the probability that the correct size Tshirt can be searched in 8th attempt ?
asked
Jul 30
in
Probability
by
piya
(
191
points)

43
views
0
votes
0
answers
9
probability win and loss
There are 2 players , say A and B . There are m+n+1 cards and A gets m cards and B gets n cards. 1 card is left behind. A personality is linked with each card. The game begins as A begins to guess the left out card . If B has the ... proceeds in this way. Now , what is the probability that A will win ? The probability must be accurate to 9 decimal places. ans:0.500000000
asked
Jul 29
in
Probability
by
avinash_thakur
(
15
points)

33
views
0
votes
1
answer
10
engg math book
out of 800 families with 5 children each,how many families would be expected to have 1. 3boy 2. 2girls
asked
Jul 26
in
Probability
by
amit166
(
39
points)

46
views
engineeringmathematics
0
votes
1
answer
11
Variation of Monty Hall Problem
You're in a game show. There are 100 doors. A Car is there behind one of those doors. 1. You pick a door. The host opens 98 other doors where the car is absent. What is the probability that the car is behind the door you picked and what ... . What is the probability that the car is behind the door 29 and what is the probability that the car is behind the door 92?
asked
Jul 24
in
Probability
by
Balaji Jegan
Active
(
1.4k
points)

42
views
0
votes
0
answers
12
Gate 2009 ece
Assume for simplicity that N people are born in April (month of 30 days) are collected in a room,consider the event of at least two people in the room being born on the same date of month even if in different years i.e 1980 and 1985 what is the smallest N so that the probability exceeds 0.5 is
asked
Jul 21
in
Probability
by
priyanka manwani
(
61
points)

34
views
0
votes
0
answers
13
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
0
answers
14
ugc net 2018 july80
asked
Jul 9
in
Probability
by
pream sagar
(
385
points)

115
views
0
votes
1
answer
15
Probability
An automobile showroom has 10 cars,2 of which are defective.If you are going to buy the 6th car sold that day at random , then the probability of selecting a defective car is? Ans:0.15 Please explain this answer.
asked
Jul 8
in
Probability
by
rutvik shah 4
(
9
points)

98
views
0
votes
0
answers
16
Probability
https://gateoverflow.in/?qa=blob&qa_blobid=4276590990497954455 Explain ans. Of q.2
asked
Jul 8
in
Probability
by
rutvik shah 4
(
9
points)

23
views
0
votes
2
answers
17
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
0
answers
18
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
19
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
20
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
(
2.3k
points)

82
views
probability
permutationsandcombinations
0
votes
2
answers
21
self doubt
A fair coin is tossed until a head comes up for the first time. The probability of this happening on an odd number toss is?
asked
Jun 26
in
Probability
by
vijju532
(
369
points)

54
views
discretemathematics
0
votes
0
answers
22
General
From last few days I am trying to solve Sheldon Ross problems. But not able to solve it. So those who have solved it kindly tell me how to strengthen the concepts as to solve the problems...........and also is the level of problems given in it are as per GATE requirement??
asked
Jun 16
in
Probability
by
mbisht
(
223
points)

16
views
+1
vote
1
answer
23
Sheldon Ross Chapter 2
If it is assumed that all (52 5) poker hands are equally likely, what is the probability of being dealt (a) a ﬂush? (A hand is said to be a ﬂush if all 5 cards are of the same suit.) (b) one pair? (This occurs when the cards have denominations a, a, ... distinct.) (c) two pairs? (This occurs when the cards have denominations a, a, b, b, c, wherea, b, andc are all distinct.)
asked
Jun 13
in
Probability
by
mbisht
(
223
points)

31
views
0
votes
1
answer
24
Sheldon Ross Chapter 2
If it is assumed that all (525) poker hands are equally likely, what is the probability of being dealt (a) a ﬂush? (A hand is said to be a ﬂush if all 5 cards are of the same suit.) (b) one pair? (This occurs when the cards have denominations a, a, b ... distinct.) (c) two pairs? (This occurs when the cards have denominations a, a, b, b, c, wherea, b, andc are all distinct.)
asked
Jun 13
in
Probability
by
mbisht
(
223
points)

17
views
+1
vote
1
answer
25
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
+1
vote
2
answers
26
Mission IIT Screening Test
Raju and Rani are playing betting game. Raju rolls a dice and if 5 comes on face then they stop the game, else Raju needs to pay 1 rupee ro Rani and continue rolling. Expected no of rupees Rani gets in this game?
asked
Jun 11
in
Probability
by
Naveen Kumar 3
Active
(
1.4k
points)

87
views
0
votes
2
answers
27
probability ques
asked
Jun 11
in
Probability
by
Sambit Kumar
Active
(
4.1k
points)

66
views
probability
0
votes
0
answers
28
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
29
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
0
votes
0
answers
30
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
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