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Recent questions tagged probability
2
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1321
A man visits a couple who have 2 children. one of the children, a boy, comes into the room.
A man visits a couple who have 2 children. one of the children, a boy, comes into the room. find the probability p that the other is also a boy. (a)1/3 (b)2/3 (c)1/2 (d)3/4
gatecse
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Probability
Sep 15, 2014
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gatecse
1.7k
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probability
normal
14
votes
5
answers
1322
GATE CSE 1995 | Question: 1.18
The probability that a number selected at random between $100$ and $999$ (both inclusive) will not contain the digit $7$ is: $\dfrac{16}{25}$ $\left(\dfrac{9}{10}\right)^{3}$ $\dfrac{27}{75}$ $\dfrac{18}{25}$
gatecse
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in
Probability
Sep 15, 2014
by
gatecse
11.0k
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gate1995
probability
normal
38
votes
4
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1323
GATE CSE 2001 | Question: 2.4
Seven (distinct) car accidents occurred in a week. What is the probability that they all occurred on the same day? $\dfrac{1}{7^7}\\$ $\dfrac{1}{7^6}\\$ $\dfrac{1}{2^7}\\$ $\dfrac{7}{2^7}\\$
Kathleen
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in
Probability
Sep 14, 2014
by
Kathleen
18.2k
views
gatecse-2001
probability
normal
28
votes
3
answers
1324
GATE CSE 2000 | Question: 2.2
$E_{1}$ and $E_{2}$ are events in a probability space satisfying the following constraints: $Pr$\left ( E_{1} \right )$ = $Pr$\left ( E_{2} \right )$ $Pr$\left ( E_{1}\cup E_{2} \right )$ = $1$ $E_{1}$ and $E_{2}$ are independent The value of $Pr$\left ( E_{1} \right )$, the probability of the event $E_{1}$, is $0$ $\dfrac{1}{4}$ $\dfrac{1}{2}$ $1$
Kathleen
asked
in
Probability
Sep 14, 2014
by
Kathleen
5.2k
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gatecse-2000
probability
easy
independent-events
52
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3
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1325
GATE CSE 2008 | Question: 29
Let $X$ be a random variable following normal distribution with mean $+1$ and variance $4$. Let $Y$ be another normal variable with mean $-1$ and variance unknown. If $P (X \leq -1) = P (Y \geq 2)$ , the standard deviation of $Y$ is $3$ $2$ $\sqrt{2}$ $1$
Kathleen
asked
in
Probability
Sep 11, 2014
by
Kathleen
23.5k
views
gatecse-2008
random-variable
normal-distribution
probability
normal
37
votes
8
answers
1326
GATE CSE 2008 | Question: 27
Aishwarya studies either computer science or mathematics everyday. If she studies computer science on a day, then the probability that she studies mathematics the next day is $0.6$. If she studies mathematics on a day, then the probability that she studies computer ... what is the probability that she studies computer science on Wednesday? $0.24$ $0.36$ $0.4$ $0.6$
Kathleen
asked
in
Probability
Sep 11, 2014
by
Kathleen
7.6k
views
gatecse-2008
probability
normal
conditional-probability
7
votes
2
answers
1327
random variable $X^2+Y^2 >1$
Consider two independent random variables $X$ and $Y$ having probability density functions uniform in the interval $[-1, 1]$. The probability that $X^{2}+Y^{2}>1$ is $\pi/4$ $1-\pi/4$ $\pi/2 - 1$ Probability that $X^{2}+Y^{2}<0.5$ None of the above.
Marv Patel
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in
Probability
Sep 6, 2014
by
Marv Patel
1.9k
views
probability
random-variable
31
votes
2
answers
1328
GATE CSE 2013 | Question: 2
Suppose $p$ is the number of cars per minute passing through a certain road junction between $5$ PM and $6$ PM, and $p$ has a Poisson distribution with mean $3$. What is the probability of observing fewer than $3$ cars during any given minute in this interval? $\dfrac{8}{(2e^{3})}$ $\dfrac{9}{(2e^{3})}$ $\dfrac{17}{(2e^{3})}$ $\dfrac{26}{(2e^{3})}$
gatecse
asked
in
Probability
Aug 7, 2014
by
gatecse
8.9k
views
gatecse-2013
probability
poisson-distribution
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