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Recent questions tagged normal-distribution
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1
GATE Applied Mock Test
3 -1 1 2
yashpaneliya
asked
in
Probability
Jan 24
by
yashpaneliya
224
views
probability
normal-distribution
random-variable
variance
1
vote
0
answers
2
NIELIT Scientist B 2020 November: 112
Let $X_1,\dots X_{50}$ be independent random variables following $N(0,1)$ distribution. Let $\Sigma _{i=1}^{50} X^2_i,$ and $E(Y)=a$ and $Var(Y)=b.$ Then, the ordered pair $(a,b)$ is: $(50,100)$ $(50,50)$ $(25,50)$ $(25,100)$
gatecse
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Unknown Category
Dec 9, 2020
by
gatecse
272
views
nielit-scb-2020
normal-distribution
2
votes
1
answer
3
NIELIT 2018-24
If $f(x)=k$ exp, $\{ -(9x^2-12x+13)\}$, is a $p, d, f$ of a normal distribution ($k$, being a constant), the mean and standard deviation of the distribution: $\mu = \frac{2}{3}, \sigma = \frac{1}{3 \sqrt{2}}$ $\mu = 2, \sigma = \frac{1}{\sqrt{2}}$ $\mu = \frac{1}{3}, \sigma = \frac{1}{3 \sqrt{2}}$ $\mu = \frac{2}{3}, \sigma = \frac{1}{ \sqrt{3}}$
Arjun
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in
Probability
Dec 7, 2018
by
Arjun
934
views
nielit-2018
engineering-mathematics
probability
normal-distribution
1
vote
2
answers
4
Probability
In four tests taken by 450 students, marks are found to be normally distributed with mean and variance as given below Test Id Mean Variance 1 74 121 2 75 100 3 78 196 4 82 169 A has secured 80 in the first test, 81 in the second, 86 in the third and ... fourth. In which test did A actually perform best relative to other students. (A)Fourth Test (B)Third Test (C)Second Test (D)First Test
Ayush Upadhyaya
asked
in
Probability
Nov 13, 2018
by
Ayush Upadhyaya
1.2k
views
engineering-mathematics
probability
normal-distribution
3
votes
1
answer
5
GATE ME 2018 Normal Distribution
Let X1, X2 be two independent normal random variables with means μ1, μ2 and standard deviations σ1, σ2 respectively. Consider Y =X1-X2; µ1=µ2=1, σl=1, σ2=2. Then. (a) Y is normal distributed with mean 0 and variance 1 (b) Y is normally ... Y has mean 0 and variance 5, but is NOT normally distributed (d) Y has mean 0 and variance 1, but is NOT normally distributed
aditi19
asked
in
Probability
Oct 16, 2018
by
aditi19
3.1k
views
probability
normal-distribution
0
votes
2
answers
6
Probability- Gravner- 76
Assume that $X$ is Normal with mean $\mu$ $=$ $2$ and variance $\sigma^2$ $=$ $25$. Compute the probability that $X$ is between $1$ and $4$.
Pooja Khatri
asked
in
Probability
Sep 26, 2018
by
Pooja Khatri
671
views
probability
gravner
engineering-mathematics
random-variable
normal-distribution
0
votes
2
answers
7
Probability- Gravner- 75.a
What is the probability that a Normal random variable differs from its mean $\mu$ by more than $\sigma$ ?
Pooja Khatri
asked
in
Probability
Sep 26, 2018
by
Pooja Khatri
386
views
gravner
probability
engineering-mathematics
random-variable
normal-distribution
4
votes
2
answers
8
Probability - Gravner-74
Let X be a $N(\mu , \sigma^2)$ random variable and let $Y = \alpha X+\beta$, with $\alpha$ > $0$. How is $Y$ distributed?
Pooja Khatri
asked
in
Probability
Sep 26, 2018
by
Pooja Khatri
518
views
probability
gravner
engineering-mathematics
random-variable
normal-distribution
1
vote
1
answer
9
ME 2014- Z score probability Normal-Distribution
A nationalized bank has found that the daily balance available in its saving bank accounts follows a normal distribution with a mean of Rs. 500 and a standard deviation of Rs. 50. The percentage of savings account holders who maintain ... Rs. 500 is _______________. Explain the calculation of the probability of Z score. Do GATE provide Z score table?
Tuhin Dutta
asked
in
Probability
Jan 23, 2018
by
Tuhin Dutta
1.4k
views
engineering-mathematics
probability
z-score
normal-distribution
3
votes
1
answer
10
Gate_other_branch_question
akash.dinkar12
asked
in
Probability
Oct 21, 2017
by
akash.dinkar12
196
views
probability
normal-distribution
42
votes
5
answers
11
GATE CSE 2017 Set 1 | Question: 19
Let $X$ be a Gaussian random variable with mean 0 and variance $\sigma ^{2}$. Let $Y$ = $\max\left ( X,0 \right )$ where $\max\left ( a,b \right )$ is the maximum of $a$ and $b$. The median of $Y$ is ______________ .
Arjun
asked
in
Probability
Feb 14, 2017
by
Arjun
16.0k
views
gatecse-2017-set1
probability
numerical-answers
normal-distribution
0
votes
0
answers
12
any good link for studying about normal distribution
please provide a good link for normal distribution Thankyou
Akriti sood
asked
in
Unknown Category
Nov 25, 2016
by
Akriti sood
863
views
engineering-mathematics
probability
normal-distribution
3
votes
1
answer
13
The The width of the slot of a duralumin is (in inches) normally distributed with μ=0.900 and σ=0.0030
Akriti sood
asked
in
Probability
Nov 24, 2016
by
Akriti sood
1.1k
views
probability
normal-distribution
3
votes
2
answers
14
ISRO2009-65
If the mean of a normal frequency distribution of 1000 items is 25 and its standard deviation is 2.5, then its maximum ordinate is $\frac{1000}{\sqrt{2 \pi} } e^{-25}$ $\frac{1000}{\sqrt{2 \pi} }$ $\frac{1000}{\sqrt{2 \pi} } e^{-2.5}$ $\frac{400}{\sqrt{2 \pi} }$
go_editor
asked
in
Probability
Jun 15, 2016
by
go_editor
2.8k
views
isro2009
statistics
normal-distribution
41
votes
3
answers
15
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 12, 2014
by
Kathleen
17.0k
views
gatecse-2008
random-variable
normal-distribution
probability
normal
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