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Recent questions tagged conditional-probability
8
votes
1
answer
121
TIFR CSE 2019 | Part A | Question: 14
A drawer contains $9$ pens, of which $3$ are red, $3$ are blue, and $3$ are green. The nine pens are drawn from the drawer one at at time (without replacement) such that each pen is drawn with equal probability from the remaining pens in the drawer. What is ... that two red pens are drawn in succession ? $7/12$ $1/6$ $1/12$ $1/81$ $\text{None of the above}$
Arjun
asked
in
Probability
Dec 18, 2018
by
Arjun
2.4k
views
tifr2019
engineering-mathematics
probability
conditional-probability
2
votes
0
answers
122
Kenneth Rosen Edition 7 Exercise 7.2 Question 24 (Page No. 467)
What is the conditional probability that exactly four heads appear when a fair coin is flipped five times, given that the first flip came up heads? shouldn't the answer be 1/16? my approach probability that we get 4 head after 4 toss=(1/2)^4 probability ... B)/P(B)=$\frac{(1/2)^4*1/2}{1/2}$ answer is given ¼? where am I going wrong?
aditi19
asked
in
Probability
Dec 1, 2018
by
aditi19
608
views
kenneth-rosen
discrete-mathematics
probability
conditional-probability
1
vote
0
answers
123
Doubt on conditional probability
It had been found from past experience that of the articles produced by a factory, 20% comes from Machine 1; 30% comes from Machine 2 and 50% from Machine 3. The percentages of satisfactory articles among those produced are 95 for machine 1, ... that is satisfactory? ii) Assume the article is satisfactory. What is the probability that it was produced by machine 1?
Tuhin Dutta
asked
in
Probability
Nov 30, 2018
by
Tuhin Dutta
550
views
probability
conditional-probability
engineering-mathematics
0
votes
1
answer
124
Probability - Gravner-37
A factory has three machines, M1, M2, and M3, that produce items (say, light bulbs). It is impossible to tell which machine produced a particular item, but some are defective. Here are the known numbers: machine proportion of items made prob. any made item is ... 5 0.003 You pick an item, test it, and find it is defective. What is the probability that it was made by M2?
Pooja Khatri
asked
in
Probability
Sep 24, 2018
by
Pooja Khatri
570
views
probability
gravner
engineering-mathematics
conditional-probability
2
votes
2
answers
125
Probability - Gravner-35
Roll a die, then select at random, without replacement, as many cards from the deck as the number shown on the die. What is the probability that you get at least one Ace?
Pooja Khatri
asked
in
Probability
Sep 23, 2018
by
Pooja Khatri
675
views
gravner
probability
engineering-mathematics
conditional-probability
0
votes
1
answer
126
Probability - Gravner-34
Flip a fair coin. If you toss Heads, roll 1 die. If you toss Tails, roll 2 dice. Compute the probability that you roll exactly one 6.
Pooja Khatri
asked
in
Probability
Sep 23, 2018
by
Pooja Khatri
369
views
gravner
probability
engineering-mathematics
conditional-probability
0
votes
1
answer
127
Probability - Gravner-33.b
An urn contains 10 black and 10 white balls. Draw 3 b) with replacement . what is probability that all three are white
Pooja Khatri
asked
in
Probability
Sep 23, 2018
by
Pooja Khatri
416
views
probability
gravner
engineering-mathematics
conditional-probability
0
votes
1
answer
128
Probability - Gravner-33.a
An urn contains 10 black and 10 white balls. Draw 3 a) without replacement
Pooja Khatri
asked
in
Probability
Sep 23, 2018
by
Pooja Khatri
333
views
probability
gravner
engineering-mathematics
conditional-probability
2
votes
1
answer
129
Probability - Gravner-32.b
Toss a coin $10$ times. b) at least $7$ Heads are tossed , what is the probability that your first toss is Heads?
Pooja Khatri
asked
in
Probability
Sep 23, 2018
by
Pooja Khatri
429
views
probability
gravner
engineering-mathematics
conditional-probability
0
votes
0
answers
130
Probability - Gravner-32.a
Toss a coin $10$ times. a) that exactly 7 Heads ar tossed.
Pooja Khatri
asked
in
Probability
Sep 23, 2018
by
Pooja Khatri
239
views
probability
gravner
engineering-mathematics
conditional-probability
0
votes
3
answers
131
Probability
Please explain how $P(A ∩ B) = P(A)P(B)$? If $A$ and $B$ are independent.
Vishnathan
asked
in
Probability
Sep 17, 2018
by
Vishnathan
580
views
conditional-probability
independent-events
0
votes
0
answers
132
Conditional Probability (Papoulis)
Trains X and Y arrive at a station at random between 8 A.M. and 8.20 A.M. Train X stops for four minutes and train Y stops for five minutes. Assuming that the trains arrive independently of each other. (a) Determine the ... ) Assuming that the trains met, determine the probability that train X arrived before train Y. Note: please explain in detail. Thanks
Ravi Raja
asked
in
Probability
Aug 29, 2018
by
Ravi Raja
2.5k
views
probability
conditional-probability
engineering-mathematics
1
vote
0
answers
133
GATE Suitability Test | Test 1 | Question: 8
The chance of rainfall in the afternoon is twice that in the morning and there is no chance of rain happening at both morning and afternoon. If it rained for $3$ days, what is the probability that there was rainfall in the morning on all three days? (rounded to two decimal places)
Arjun
asked
in
Probability
Jun 10, 2018
by
Arjun
199
views
gate-suitability-test-1
conditional-probability
numerical-answers
1
vote
2
answers
134
Bayes theorem
This is extended form of Bayes theorem Can somebody explain (or can prove), how from 1st line 2 line came?
srestha
asked
in
Probability
May 5, 2018
by
srestha
2.4k
views
probability
conditional-probability
engineering-mathematics
1
vote
0
answers
135
Probability
murder takes place in an isolated village with 500 inhabitants. The police believe that red polyester fibers will have been transferred on to the murderer's clothes during the assault. Forensic experiments reveal that a probability of 0.9 can be assigned to such a transfer while the ... (a) P(guilt| fibers present) (b) P(fibres|guilt) (c) P(fibers) (d) P(guilt and fibers present).
Abhi Girin
asked
in
Mathematical Logic
Apr 18, 2018
by
Abhi Girin
536
views
probability
conditional-probability
1
vote
0
answers
136
Gate 2017
$P$ & $Q$ are considering to apply for a job.The probability that $P$ applies for a job is $\dfrac{1}{4}$, the probability that $P$ applies for the job given that $Q$ applies for the job is $\dfrac{1}{2}$, and the probability that $Q$ applies for the job given that $P$ ... job given that $Q$ does not apply for the job is $\dfrac{4}{5}$ $\dfrac{5}{6}$ $\dfrac{7}{8}$ $\dfrac{11}{12}$
Avik Chowdhury
asked
in
Probability
Mar 28, 2018
by
Avik Chowdhury
345
views
conditional-probability
5
votes
0
answers
137
Probability
Experiment one results in the mutually exclusive and collectively exhaustive events $A, B$ and $C$. Experiment two results in the mutually exclusive and collectively exhaustive events $D$ and $E$. The joint probabilities of the events that may result from these two experiments are given below: $A$ $B$ $C$ $D$ $0.12$ ... $4, 6, 7, 10$ $2, 3, 4, 6, 9$ $3, 5, 7, 8, 10$ $1, 2, 4, 6, 9.$
Jason
asked
in
Probability
Mar 24, 2018
by
Jason
518
views
engineering-mathematics
probability
conditional-probability
1
vote
3
answers
138
Probability
If events $B$ and $C$ are dependent on event $A$ and $P(A \hspace{0.1cm}and\hspace{0.1cm} B) = 0.30$, $P(A\hspace{0.1cm} and\hspace{0.1cm} C) = 0.20$ and the dependent events $B$ and $C$ are mutually exclusive and collectively exhaustive, then $P(C/A)$ is equal to ________ ?
Jason
asked
in
Probability
Mar 24, 2018
by
Jason
2.3k
views
engineering-mathematics
probability
conditional-probability
0
votes
1
answer
139
Naive Bayes Algorithm
What is the step by step procedure to apply algorithms like Decision Tree, Naive Bayes, etc... on a dataset using Python?
Balaji Jegan
asked
in
Big Data/Data Analytics
Feb 20, 2018
by
Balaji Jegan
964
views
conditional-probability
probability
data-analytics
machine-learning
1
vote
2
answers
140
PROBABILITY QUESTION
cocgame
asked
in
Probability
Feb 14, 2018
by
cocgame
2.5k
views
probability
conditional-probability
engineering-mathematics
39
votes
4
answers
141
GATE CSE 2018 | Question: 44
Consider Guwahati, $(G)$ and Delhi $(D)$ whose temperatures can be classified as high $(H)$, medium $(M)$ and low $(L)$. Let $P(H_G)$ denote the probability that Guwahati has high temperature. Similarly, $P(M_G)$ ... , then the probability (correct to two decimal places) that Guwahati has high temperature given that Delhi has high temperature is ________.
gatecse
asked
in
Probability
Feb 14, 2018
by
gatecse
13.6k
views
gatecse-2018
probability
conditional-probability
numerical-answers
2-marks
2
votes
1
answer
142
MadeEasy Test Series 2018: Probability - Conditional Probability
An article manufactured by a company consists of two independent parts A and B. In the process of manufacture of part A, 9 out of 100 are likely to be defective. Similarly in the process of manufacture of part ... likely to be defective. The probability that the assembled article will be defective is ________. (Upto 3 decimal places)
Sukhdip Singh
asked
in
Probability
Jan 25, 2018
by
Sukhdip Singh
853
views
probability
conditional-probability
engineering-mathematics
made-easy-test-series
4
votes
0
answers
143
Made Easy Full Test - Hashing + Probability
Question - Consider a hash table with 8 slots that use chaining for collision resolution. The table is initially empty. What is the probability that after 4 keys are inserted, at least a chain of size 3 is created? (assume simple uniform hashing is used) Correct answer - $29*8^{^{-3}}$ My answer - $8*8^{^{-3}}$
Akash Mishra
asked
in
Probability
Jan 18, 2018
by
Akash Mishra
1.1k
views
hashing
data-structures
probability
conditional-probability
4
votes
0
answers
144
Bayes theorem
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 ... disease was diagnosed correctly is ________%. I had solved it using Bayes theorem. and getting 66.66% but answer given is 46.15.
Shubhanshu
asked
in
Calculus
Jan 15, 2018
by
Shubhanshu
2.1k
views
conditional-probability
probability
engineering-mathematics
4
votes
3
answers
145
Total probability and Baye's theorem
When we should use Total probability and Baye's Theorem? Explain with examples.
Sona Barman
asked
in
Probability
Jan 11, 2018
by
Sona Barman
3.1k
views
probability
engineering-mathematics
conditional-probability
4
votes
0
answers
146
Conditional probability
A student $Y$ lives in a place $X$. In $X$ a day can be cloudy with probability $\bf0.02$ uniformly each day. $Y$'s friends may come to his house with probability $\bf0.2$ uniformly in each day irrespective of weather condition. These two events are independent. $Y$ ... on a particular day ?
dd
asked
in
Probability
Dec 25, 2017
by
dd
692
views
conditional-probability
17
votes
2
answers
147
TIFR CSE 2018 | Part A | Question: 13
A hacker knows that the password to the TIFR server is $10$-letter string consisting of lower-case letters from the English alphabet. He guesses a set of $5$ distinct $10$-letter strings (with lower-case letters) uniformly at random. What is the probability that one of the ... $ \frac{1}{(26)^{10}}$ None of the above
Rohit Gupta 8
asked
in
Probability
Dec 10, 2017
by
Rohit Gupta 8
2.0k
views
tifr2018
probability
conditional-probability
17
votes
3
answers
148
TIFR CSE 2018 | Part A | Question: 15
Suppose a box contains $20$ balls: each ball has a distinct number in $\left\{1,\ldots,20\right\}$ written on it. We pick $10$ balls (without replacement) uniformly at random and throw them out of the box. Then we check if the ball with number $\text{ 1"}$ ... $\text{ 2"}$ on it is present in the box? $9/20$ $9/19$ $1/2$ $10/19$ None of the above
Rohit Gupta 8
asked
in
Probability
Dec 10, 2017
by
Rohit Gupta 8
2.7k
views
tifr2018
probability
conditional-probability
2
votes
1
answer
149
Gambler and Four Coins
A Gambler has four coins in his pocket. Two are double-headed, one is double-tailed and one is normal coin. The coins cannot be distinguished until one looks at them. The gambler takes a coin at random, opens his eyes and sees that the upper face of the coin is the head. What is the probability that the lower face is a head? Given answer is 4/5. I think it should be 2/3.
Shubhanshu
asked
in
Probability
Dec 6, 2017
by
Shubhanshu
885
views
probability
conditional-probability
0
votes
0
answers
150
Probability
Parshu gate
asked
in
Probability
Dec 5, 2017
by
Parshu gate
625
views
engineering-mathematics
probability
conditional-probability
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