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Recent questions tagged probability
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linear algebra and prob for Interviews
I am not able to know how much linear algebra and probability to study for the upcoming interviews. right now I am studying these: Sir Gilbert Strang videos on YT for linear algebra Khan academy videos on YT for probability so is this OK or something I am missing? Please suggest. Thanks.
asked
Mar 23
in
Written Exam
by
Rajat Maheshwari
(
14
points)

9
views
linearalgebra
probability
0
votes
0
answers
Probability#normal distribution
In a sample of 100 students, the mean of the marks (only integers) obtained by them in a test is 14 with its standard deviation of 2.5(marks obtained can be fitted with a normal distribution ).the percentage of students scoring 16 marks is a)36 b)23 c)12 d)10 (Area under standard normal curve between z=0 and z=0.6 is 0.2257 ; and between z=0 and z=1.0 is 0.3413)
asked
Jan 30
in
Probability
by
kalra05
(
73
points)

57
views
probability
deviation
0
votes
0
answers
Testbook: Mock
In a BST, the key with value 5 was searched after traversing nodes with values 1,3,4,6,7,8,9, not necessarily in that order. What is the probability that the 3rd element on the search path beginning from the root is either 3 or 8?
asked
Jan 29
in
DS
by
Sambhrant Maurya
(
401
points)

83
views
probability
binary_search_tree
0
votes
0
answers
gate 2008 it ques 23 doubt regarding options
In https://gateoverflow.in/3284/gate2008it23 are the options given correct?
asked
Jan 26
in
Probability
by
Pratyush Priyam Kuan
(
804
points)

29
views
probability
0
votes
0
answers
SELF DOUBT: VARIANCE
When $n$ and $p$ is available can we apply $Binomial$ $theorem$ in ALL THE CASES to find the $variance$ by using the formula $npq?$
asked
Jan 23
in
Probability
by
Debapaul
(
699
points)

16
views
probability
0
votes
0
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
asked
Jan 11
in
Probability
by
OBaid Alam
(
8
points)

8
views
probability
bayes
0
votes
1
answer
Conditional Probabiltiy
A box contains 4 coins. In which two of them are regular coins i.e. one side head and another side tail. And two coins are fake coins, one consists of head on both sides and another coin consists of tail on both sides. Then what is the probability of getting a ... fake? a) 0.25 b) 0.75 c) 0.60 I tried using bayes theorem but I am not able to formulate the values precisely.
asked
Dec 26, 2019
in
Probability
by
haralk10
(
62
points)

28
views
probability
bayes
0
votes
2
answers
Maths Poisson Distribution
Vehicles arriving at an intersection from one of the approach roads follow the Poisson distribution. The mean rate of arrival is 900 vehicles per hour. If a gap is defined as the time difference between two successive vehicle arrivals (with vehicles ... the probability (up to four decimal places) that the gap is greater than 8 seconds is ___________ Anyone please clarify.
asked
Dec 14, 2019
in
Probability
by
Shivateja MST
(
113
points)

41
views
probability
discrete_maths
0
votes
0
answers
Maths Probability
A Set S has 20 elements.A Subset P of S is selected at random.After inspecting the elements the elements are put back in to S and then a subset Q is selected at random.Then the probability that P and Q are disjoint is _______ (1/3)^20 (1/2)^20 (2/3)^20 (3/4)^20 Anyone please clarify.
asked
Dec 13, 2019
in
Probability
by
Shivateja MST
(
113
points)

15
views
probability
discrete_maths
engineeringmaths
0
votes
0
answers
Probability Uniform Distribution
Buses arrive at a specified stop at 15minute intervals starting at 7 A.M.That is, they arrive at 7, 7:15, 7:30, 7:45, and so on.If a passenger arrives at the stop at a time that is uniformly distributed between 7 and 7:30, find the probability that ... than 5 minutes for a bus. (2) More than 10 minutes for a bus. (3) atleast 12 min for a bus. Anyone please clarify.
asked
Dec 12, 2019
in
Probability
by
Shivateja MST
(
113
points)

7
views
probability
0
votes
0
answers
Applied course test series:Probability
Out of 10 persons sitting at a round table, three persons A, B and C are selected a random. The chance that no two of these are sitting together is What is the correct answer for above question?
asked
Dec 1, 2019
in
Probability
by
vishal burnwal
(
135
points)

33
views
probability
0
votes
0
answers
Want to verify the answer. Self Notes
We are given two urns as follows. Urn A contain 5 red marbles, 3 white marbles and 8 blue marbles. Urn B contains 3 red marbles and 5 white marbles. A fair dice is tossed if 3 & 6 appears a marble is chosen from urn B otherwise a marble is ... is the probability that it came from urn A. I don't know the answer. I am getting $\frac{5}{8}$ Please verify.
asked
Sep 15, 2019
in
Probability
by
`JEET
(
179
points)

27
views
probability
0
votes
1
answer
Standard question but looking for the correct procedure or some different methods
asked
Sep 15, 2019
in
Probability
by
`JEET
(
179
points)

27
views
probability
bayes
0
votes
1
answer
Problem on Probability
A set contain 5 distinct element .A oneone mapping is selected at random from A to A.Find the probability that number match to exactly itself.
asked
Sep 15, 2019
in
Combinatory
by
Registered user 92
(
7
points)

21
views
probability
0
votes
0
answers
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...
asked
Sep 12, 2019
in
Probability
by
`JEET
(
179
points)

12
views
probability
binomial_distribution
0
votes
1
answer
if A and B are mutually exclusive event with P(A)=0.3 P(B)= 0.5 then $P(A \cap B) =$
asked
Sep 3, 2019
in
Numerical Ability
by
OgbeborBeatrice
(
13
points)

114
views
probability
0
votes
1
answer
Made easy Practice Book
Consider a random variable X that takes values +1 and 1 with probability 0.5 each. The values of the cumulative distribution function F(x) at x=1 and +1 are A. 0 and 0.5 B. 0 and 1 C. 0.5 and 1 D. 0.25 and 0.75
asked
Aug 30, 2019
in
Probability
by
Neil0
(
6
points)

17
views
probability
0
votes
1
answer
[GATEBOOK TESTSERIES] What is the expectation of the following event?
asked
Aug 29, 2019
in
Probability
by
ummokkate
(
48
points)

17
views
#testseries
engineeringmaths
probability
0
votes
2
answers
A 52 card deck is divided into four hands with 13 cards each. What is the probability that each hand has a queen?
asked
Aug 25, 2019
in
Probability
by
ummokkate
(
48
points)

27
views
probability
0
votes
1
answer
A draws 2 cards at random from a pack of 52 cards.
asked
Aug 22, 2019
in
Probability
by
Shubhm
(
23
points)

32
views
probability
0
votes
0
answers
Self doubt Independent events
In probability, in case of 3 events, why do we need to check pair wise independence rather than just mutual?
asked
Jul 28, 2019
in
Probability
by
sachin270895
(
6
points)

9
views
probability
engineeringmaths
independent
events
0
votes
1
answer
Probability RD SHARMA
A laboratory blood test is 99%effective in detecting a certain disease when it is in fact, present. However, the test also yield a false positive result for 0.5%of the healthy person tested (that is, if a healthy person is tested, then, with ... population actually has the disease, what is the probability that a person has the disease given that his test result is positive?
asked
Jul 18, 2019
in
Probability
by
koyel123
(
21
points)

21
views
probability
+1
vote
1
answer
Ross Chapter 3 Page no56 Question2b
A customer visiting the suit department of a certain store will purchase a suit with probability .22, a shirt with probability .30, and a tie with probability .28. The customer will purchase both a suit and a shirt with probability .11 ... will purchase all 3 items with probability .06. What is the probability that a customer purchases exactly 1 of these items?
asked
Jul 10, 2019
in
Probability
by
aditi19
(
55
points)

56
views
sheldonross
probability
0
votes
1
answer
#Total Probability
In a tournament A is in Final, B and C are in semifinal, Probability that B wins semifinal is (1/3) and C wins the semifinal is (2/3), If A vs B then probability that A win is (2/3) and if A vs C then probability that A win is(1/4). What is the Probability that B will win in Final? What is the Probability that C will win in Final?
asked
Jul 9, 2019
in
Probability
by
Ayon Mitra
(
7
points)

10
views
probability
0
votes
0
answers
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)?
asked
Jul 2, 2019
in
Probability
by
pavitra
(
6
points)

14
views
probability
0
votes
1
answer
aptitude probabilty rolling dies
whats is the probabolity???????????
asked
Jul 1, 2019
in
Verbal Ability
by
shiva0
(
19
points)

30
views
permutationandcombination
quant
probability
0
votes
1
answer
Sheldon Ross 9e Chapter3 page no103 Question7 & 8
asked
Jun 30, 2019
in
Probability
by
aditi19
(
55
points)

25
views
sheldonross
probability
conditionalprobability
0
votes
1
answer
Probability , permutations and combinations
What is the solution for the below problem, can anyone explain clearly,.........
asked
Jun 24, 2019
in
Numerical Ability
by
shiva0
(
19
points)

18
views
probability
quant
permutationandcombination
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