Recent questions and answers in Probability

Recent questions and answers in Probability

0 votes

0 answers 77 views

Sample question for Mtech AI entrance test.
Let a biased coin be tossed n times in succession, with the probability of heads being p. The probability that all the tosses show the same face is.

Mech_guy asked in Probability Jul 1, 2021

5 points

77 views

0 votes

0 answers 33 views

TIFR 2019
Consider a coin which comes up with heads with probability p and tails with probability 1-p, where 0 < p < 1. Suppose we keep tossing the coin until we have seen both sides of coin. What is expected number of times we would have seen tails? (Hint : the expected number of tosses required to see heads for the first time 1/p)

Aashay kaurav asked in Probability Jun 26, 2021

by Aashay kaurav

5 points

33 views

1 vote

0 answers 160 views

IIT Gandhinagar Written Test Probability Question
There are 100 rooms in a hotel. The hotel manager is lazy. When a customer requests a room, the manager picks a room from 1 to 100 uniformly at random without even bothering to check whether it is already occupied. If the room is already ... try to check in, one by one, to the hotel. Show that the expected number of occupants is at least 50.

Subham Das asked in Probability May 12, 2021

11 points

160 views

0 votes

0 answers 28 views

Which books should i refer for learning distributions in probability?

kaleen bhaiya asked in Probability Mar 4, 2021

by kaleen bhaiya

9 points

28 views

1 vote

0 answers 49 views

DRDO 2020 computer science descriptive exam
Consider a binomial experiment of flipping a biased coin five times with probability of head ,p=0.75 and probability of tail q=0.25 in each flip. What is the probability that last two flips will be heads if the first three flips are known to be tails ?

rapidxy asked in Probability Feb 25, 2021

9 points

49 views

0 votes

0 answers 670 views

GATE CSE 2021 Set 2 | Question: 22 | Video Solution

Arjun asked in Probability Feb 18, 2021

by Arjun

1.4k points

670 views

0 votes

0 answers 858 views

GATE CSE 2021 Set 2 | Question: 29 | Video Solution

Arjun asked in Probability Feb 18, 2021

by Arjun

1.4k points

858 views

0 votes

0 answers 1.4k views

GATE CSE 2021 Set 2 | Question: 33 | Video Solution

Arjun asked in Probability Feb 18, 2021

by Arjun

1.4k points

1.4k views

0 votes

0 answers 805 views

GATE CSE 2021 Set 1 | Question: 18 | Video Solution

Arjun asked in Probability Feb 18, 2021

by Arjun

1.4k points

805 views

0 votes

0 answers 589 views

GATE CSE 2021 Set 1 | Question: 35 | Video Solution

Arjun asked in Probability Feb 18, 2021

by Arjun

1.4k points

589 views

0 votes

0 answers 681 views

GATE CSE 2021 Set 1 | Question: 54 | Video Solution

Arjun asked in Probability Feb 18, 2021

by Arjun

1.4k points

681 views

0 votes

1 answer 36 views

Made easy postal course
A bag contains 5 black, 2 red and 3 white marbles. Three marbles are drawn simultaneously. The probability that the drawn marbles are of the different color is ?

SarathBaswa answered in Probability Jan 20, 2021

855 points

36 views

0 votes

0 answers 55 views

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

farazbukhari0 asked in Probability Jan 14, 2021

by farazbukhari0

5 points

55 views

0 votes

0 answers 57 views

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.

reboot asked in Probability Jan 9, 2021

by reboot

5 points

57 views

0 votes

0 answers 64 views

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

eyeamgj asked in Probability Dec 20, 2020

29 points

64 views

0 votes

1 answer 52 views

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?

zxy123 answered in Probability Dec 2, 2020

by zxy123

3.6k points

52 views

1 vote

1 answer 103 views

Probability ncert doubt
Find the probability that at most 2 heads and at most 2 tails occur when 4 coins are tossed simultaneously?

zxy123 answered in Probability Dec 2, 2020

by zxy123

3.6k points

103 views

0 votes

0 answers 49 views

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?

Dheera asked in Probability Nov 30, 2020

by Dheera

-8 points

49 views

0 votes

0 answers 59 views

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.

Dheera asked in Probability Nov 27, 2020

by Dheera

-8 points

59 views

1 vote

1 answer 98 views

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 i-th ball is drawn at the i-th draw ? now can you use linearity of expectation to solve the problem

zxy123 answered in Probability Nov 27, 2020

by zxy123

3.6k points

98 views

0 votes

1 answer 340 views

NIELIT NIC scientist-B 2020 set-C 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)

ankitgupta.1729 answered in Probability Nov 26, 2020

by ankitgupta.1729

359 points

340 views

1 vote

1 answer 33 views

zxy123 answered in Probability Nov 3, 2020

by zxy123

3.6k points

33 views

0 votes

1 answer 34 views

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….

SarathBaswa answered in Probability Oct 30, 2020

855 points

34 views

0 votes

2 answers 108 views

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.

ayush.5 answered in Probability Oct 22, 2020

99 points

108 views

0 votes

0 answers 33 views

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?

eyeamgj asked in Probability Oct 20, 2020

29 points

33 views

0 votes

2 answers 48 views

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

ijnuhb answered in Probability Oct 9, 2020

by ijnuhb

751 points

48 views

0 votes

1 answer 70 views

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?

Ehraz Hasan answered in Probability Sep 15, 2020

366 points

70 views

1 vote

1 answer 103 views

Gravner Probability Exercise

ijnuhb answered in Probability Sep 7, 2020

by ijnuhb

751 points

103 views

0 votes

2 answers 138 views

#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?

suvradip das answered in Probability Aug 27, 2020

by suvradip das

129 points

138 views

1 vote

4 answers 330 views

probability basic
In a family with 4 children, what is the probability of a 2:2 boy-girl split?

SarathBaswa answered in Probability Aug 23, 2020

855 points

330 views

0 votes

1 answer 44 views

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)?

Arkaprava answered in Probability Aug 16, 2020

873 points

44 views

0 votes

1 answer 83 views

Self Doubt: Eng. Math
what is median of $max\left ( x,y \right )$? Will it be $0$ or $\frac{x+y}{2}$?

Arkaprava answered in Probability Aug 15, 2020

873 points

83 views

0 votes

2 answers 738 views

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?

manas_kulkarni answered in Probability Aug 15, 2020

by manas_kulkarni

1 point

738 views

0 votes

1 answer 98 views

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.

Arkaprava answered in Probability Aug 13, 2020

873 points

98 views

0 votes

1 answer 354 views

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.

Arkaprava answered in Probability Aug 13, 2020

873 points

354 views

0 votes

1 answer 249 views

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?

Arkaprava answered in Probability Aug 13, 2020

873 points

249 views

0 votes

2 answers 43 views

#A First Course In Probability Sheldon Ross #self_doubt

SarathBaswa answered in Probability Aug 13, 2020

855 points

43 views

0 votes

1 answer 82 views

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)

Arkaprava answered in Probability Aug 12, 2020

873 points

82 views

0 votes

1 answer 40 views

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...

Arkaprava answered in Probability Aug 12, 2020

873 points

40 views

0 votes

1 answer 42 views

Self doubt- Independent events
In probability, in case of 3 events, why do we need to check pair wise independence rather than just mutual?

Arkaprava answered in Probability Aug 11, 2020

873 points

42 views

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Recent questions and answers in Probability

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