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Webpage for Probability
Recent questions tagged probability
1
votes
1
answer
811
Higher Engg. Mathematics by B.S. Grewal probability & statistics
Out of 50 rare books, 3 of which are especially valuable, 5 are stolen at random by a thief.? What is the probability that a) none of the 3 is included b) 2 of the 3 are included?
Out of 50 rare books, 3 of which are especially valuable, 5 are stolen at random by a thief.?What is the probability that a) none of the 3 is included b) 2 of the 3 are i...
Kar98k
2.3k
views
Kar98k
asked
Jan 12, 2018
Probability
probability
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1
votes
1
answer
812
Probability
A pair of dice is rolled and the sum is determined. The probability that a sum of 5 is rolled before the sum of 8 is rolled in a sequence of rolls of dice is _______________
A pair of dice is rolled and the sum is determined. The probability that a sum of 5 is rolled before the sum of 8 is rolled in a sequence of rolls of dice is ____________...
Saswat Senapati
557
views
Saswat Senapati
asked
Jan 11, 2018
Probability
probability
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1
votes
0
answers
813
Probability Problem
Suppose we have 2 bags. Bag 1 contains 3 red and 7 green balls. Bag 2 contains 4 red and 8 green balls. A person tosses a coin and if it is heads goes to bag 1 and draws a ball. If it is tails, he goes to bag 2 and draws a ball. Given that the ball draw is red, then what is probability that it came from bag 1? $0.317$ or $0.4737 \ ?$
Suppose we have 2 bags. Bag 1 contains 3 red and 7 green balls. Bag 2 contains 4 red and 8 green balls. A person tosses a coin and if it is heads goes to bag 1 and draws ...
saxena0612
1.1k
views
saxena0612
asked
Jan 11, 2018
Mathematical Logic
probability
engineering-mathematics
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4
votes
1
answer
814
Probability
Lakshman Bhaiya
335
views
Lakshman Bhaiya
asked
Jan 11, 2018
Probability
engineering-mathematics
probability
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4
votes
3
answers
815
Total probability and Baye's theorem
When we should use Total probability and Baye's Theorem? Explain with examples.
When we should use Total probability and Baye's Theorem? Explain with examples.
Sona Barman
3.1k
views
Sona Barman
asked
Jan 11, 2018
Probability
probability
engineering-mathematics
conditional-probability
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1
votes
0
answers
816
Self Doubt
In a production facility, iron rods are made with a mean diameter of 6cm and Standard Deviation of 0.02cm. If a large number of rods are tested, the approximate percentage of rods whose size fall in range of 5.98cm and 6.02 cm is _____?
In a production facility, iron rods are made with a mean diameter of 6cm and Standard Deviation of 0.02cm. If a large number of rods are tested, the approximate percentag...
vishal chugh
514
views
vishal chugh
asked
Jan 11, 2018
Probability
engineering-mathematics
probability
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4
votes
4
answers
817
Probability of Dice
A pair of dice is rolled, till a sum of either 5 or 7 obtained. Find the probability that 5 comes before 7?
A pair of dice is rolled, till a sum of either 5 or 7 obtained. Find the probability that 5 comes before 7?
srestha
732
views
srestha
asked
Jan 10, 2018
Probability
probability
engineering-mathematics
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4
votes
1
answer
818
Probability Gate EE 2016
Let the probability function of a random variable,X,be given as: fx (x) =$\frac{3}{2}$e-3xu(x)+ae4x u(-x) where u(x) is the unit step function.Then the value of 'a' and Probability{x<=0},respectively,are a) 2, $\frac{1}{2}$ b) 4, $\frac{1}{2}$ c)2, $\frac{1}{4}$ d)2, $\frac{1}{4}$
Let the probability function of a random variable,X,be given as: fx (x) =$\frac{3}{2}$e-3xu(x)+ae4x u(-x)where u(x) is the unit step function.Then the value o...
junaid ahmad
847
views
junaid ahmad
asked
Jan 8, 2018
Probability
engineering-mathematics
probability
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2
votes
0
answers
819
Maths: Probability
Consider that, there are 365 days in a year, what is the probability that exactly two out of ten people are born on the same day?
Consider that, there are 365 days in a year, what is the probability that exactly two out of ten people are born on the same day?
Manu Thakur
469
views
Manu Thakur
asked
Jan 8, 2018
Mathematical Logic
probability
engineering-mathematics
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4
votes
2
answers
820
Probability
Given 4 children lives in Mrs. A home. One fine day Mrs. A reveals to Mr. A that atleast 1 out of 4 children is a girl. Probability that there are exactly 3 girl in Mrs. A's home __________
Given 4 children lives in Mrs. A home. One fine day Mrs. A reveals to Mr. A that atleast 1 out of 4 children is a girl. Probability that there are exactly 3 girl in Mrs. ...
srestha
610
views
srestha
asked
Jan 6, 2018
Probability
probability
engineering-mathematics
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4
votes
0
answers
821
Birthday paradox
From a group of 30 students, what is the probability that at least two of them have birthday on the same day?
From a group of 30 students, what is the probability that at least two of them have birthday on the same day?
hacker16
558
views
hacker16
asked
Jan 6, 2018
Probability
probability
birthday
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3
votes
1
answer
822
GATE 2017 - [EE]
A person decides to toss a fair coin repeatedly until he gets a head. He will make at most 3 tosses. Let the random variable Y denote the number of heads. The value of var (Y) where var (.) denotes the variance, equals (A) 7/8 (B) 49/64 (C) 7/64 (D) 105/64
A person decides to toss a fair coin repeatedly until he gets a head. He will make at most 3 tosses. Let the random variable Y denote the number of heads. The value of va...
cocgame
2.8k
views
cocgame
asked
Jan 5, 2018
Probability
engineering-mathematics
probability
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1
votes
0
answers
823
Probabillity
4 friends (Alex, Blake, Chris and Dusty) each choose a random number between 1 and 5. What is the chance that any of them chose the same number? Ans:101/125
4 friends (Alex, Blake, Chris and Dusty) each choose a random number between 1 and 5. What is the chance that any of them chose the same number?Ans:101/125
Rohit Gupta 8
831
views
Rohit Gupta 8
asked
Jan 5, 2018
Probability
probability
discrete-mathematics
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2
votes
1
answer
824
Probability
I toss a coin repeatedly. The coin is unfair and P(H) = p. The game ends the first time that two consecutive heads (HH) or two consecutive tails (TT) are observed. I win if HH is observed and lose if TT is observed. For example if the outcome is HTHTT, I lose. On the other hand, if the outcome is THTHTHH, I win. Find the probability that I win. Ans: $\frac{p^{2} (2-p)}{(1-p+p^{2} )}$
I toss a coin repeatedly. The coin is unfair and P(H) = p. The game ends the first time that two consecutive heads (HH) or two consecutive tails (TT) are observed. I win ...
Rohit Gupta 8
1.9k
views
Rohit Gupta 8
asked
Jan 5, 2018
Probability
probability
engineering-mathematics
discrete-mathematics
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1
votes
0
answers
825
nielit scientist assistan
If a random coin is tossed $11$ times, then what is the probability that for $7$th toss head appears exactly $4$ times? $5/32$ $15/128$ $35/128$ None of the options
If a random coin is tossed $11$ times, then what is the probability that for $7$th toss head appears exactly $4$ times?$5/32$$15/128$$35/128$None of the options
Dilip Puri 7
232
views
Dilip Puri 7
asked
Jan 3, 2018
Probability
nielit2017
probability
engineering-mathematics
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1
votes
2
answers
826
Probablity
Given a coin which gives HEADS with probability 1/4 and TAILS with 3/4. The coin is tossed k times. What is the probability that we get at least k/2 HEADS is less than or equal to? (A) (1/2) k/5 (B) (1/2) k/2 (C) (1/3) k/2 (D) (1/5) k/2 (Explain how to solve the summation of binomial equation that comes up )
Given a coin which gives HEADS with probability 1/4 and TAILS with 3/4. The coin is tossed k times. What is the probability that we get at least k/2 HEADS is less than or...
yogi_p
16.7k
views
yogi_p
asked
Dec 30, 2017
Probability
engineering-mathematics
probability
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1
votes
0
answers
827
Probabilty
Probabilty
Probabilty
Pawan Kumar 2
569
views
Pawan Kumar 2
asked
Dec 27, 2017
Probability
probability
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0
votes
1
answer
828
Exponential Distribution
Consider X to be an exponentially distributed random variable with parameter $\lambda =0.5$ that represents the time (in hour) required to repair a machine.What is the conditional probability that it will take atleast 6 hour to repair, given that time exceeds 5 hours?
Consider X to be an exponentially distributed random variable with parameter $\lambda =0.5$ that represents the time (in hour) required to repair a machine.What is the co...
srestha
2.7k
views
srestha
asked
Dec 26, 2017
Probability
probability
engineering-mathematics
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0
votes
0
answers
829
Probability
If A and B are independent, then A and Bc are also independent Is it true or false?
If A and B are independent, then A and Bc are also independentIs it true or false?
srestha
269
views
srestha
asked
Dec 26, 2017
Probability
probability
engineering-mathematics
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0
votes
0
answers
830
Probability
An employee X is collecting donation for a social cause from his co employees at work. More than half of the donations that X received have been in the amount 1000 INR , where others have been equally divided among values of 500 INR and 1500 INR. What could be relation between Mean, Mode , Median regarding the distribution of donations?
An employee X is collecting donation for a social cause from his co employees at work. More than half of the donations that X received have been in the amount 1000 INR , ...
srestha
234
views
srestha
asked
Dec 26, 2017
Probability
probability
engineering-mathematics
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0
votes
0
answers
831
Probability
Can someone mathematically derive this equation? P(A/B)>P(A)
Can someone mathematically derive this equation?P(A/B)>P(A)
srestha
172
views
srestha
asked
Dec 26, 2017
Probability
probability
engineering-mathematics
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4
votes
0
answers
832
Probability
Q)100 dices are thrown. How many are expected to fall either a 3 or 6 _______.
Q)100 dices are thrown. How many are expected to fall either a 3 or 6 _______.
Lakshman Bhaiya
228
views
Lakshman Bhaiya
asked
Dec 25, 2017
Probability
probability
+
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2
votes
1
answer
833
MadeEasy Test Series: Probability
Q)A product is an assembly of 4 different components. The product can be sequentially assembled in two possible ways. If the 4 components are placed in a box and these are drawn at random from the box, then the probability of getting a correct sequence is ______.
Q)A product is an assembly of 4 different components. The product can be sequentially assembled in two possible ways. If the 4 components are placed in a box and these ar...
Lakshman Bhaiya
1.2k
views
Lakshman Bhaiya
asked
Dec 25, 2017
Probability
made-easy-test-series
probability
+
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2
votes
0
answers
834
Probability Propertise
Q)Suppose A and B are two independent events with probabilities P (A) ≠ 0 and P(B) ≠ 0. Let and be their com plements. Which one of the following statements is FALSE? A) P(A ∩ B) = P (A) P (B) B) P (A/B) = P(A) C) P (A ∪ B) = P(A) + P (B) D) None of Thsese
Q)Suppose A and B are two independent events with probabilities P (A) ≠ 0 and P(B) ≠ 0. Let and be their complements. Which one of the following statements is FALSE...
Lakshman Bhaiya
286
views
Lakshman Bhaiya
asked
Dec 25, 2017
Probability
probability
+
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2
votes
0
answers
835
Probability
Q) Two cards are drawn together from a pack of 52 cards. The probability that one is spade and other is king, is A) 1/26 B) 2/51 C) 8/221 D) None of these
Q) Two cards are drawn together from a pack of 52 cards. The probability that one is spade and other is king, isA) 1/26B) 2/51C) 8/221D) None of these
Lakshman Bhaiya
160
views
Lakshman Bhaiya
asked
Dec 25, 2017
Probability
probability
+
–
1
votes
2
answers
836
NIELIT DEC 2017 SET-C 62
If a random coin is tossed 11 times then what is the probability that for 7th toss head appears exactly 4 times? 5/32 15/128 35/128 None of the options
If a random coin is tossed 11 times then what is the probability that for 7th toss head appears exactly 4 times?5/3215/12835/128None of the options
mohitbawankar
2.1k
views
mohitbawankar
asked
Dec 24, 2017
Probability
probability
+
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0
votes
0
answers
837
probability
Abhishek Kumar Singh
153
views
Abhishek Kumar Singh
asked
Dec 24, 2017
Probability
probability
+
–
0
votes
1
answer
838
Probability Density function
VS
985
views
VS
asked
Dec 22, 2017
Probability
engineering-mathematics
probability
+
–
0
votes
1
answer
839
Made_easy Tst
i have done it like this..... (1/8)3+ 7/(8)3=8-2 .....how this is wrong...???
i have done it like this.....(1/8)3+ 7/(8)3=8-2 .....how this is wrong...???
hs_yadav
372
views
hs_yadav
asked
Dec 16, 2017
Algorithms
made-easy-test-series
hashing
probability
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0
votes
0
answers
840
gateforum test series
charul
221
views
charul
asked
Dec 12, 2017
Probability
gateforum-test-series
probability
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