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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
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Nov 13, 2018
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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 =X1X2; 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
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Oct 16, 2018
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aditi19
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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 $4$.
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Sep 26, 2018
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Pooja Khatri
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Probability Gravner 75.a
What is the probability that a Normal random variable differs from its mean $\mu$ by more than $\sigma$ ?
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Sep 26, 2018
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Pooja Khatri
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gravner
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Probability  Gravner74
Let X be a $N(\mu , \sigma^2)$ random variable and let $Y = \alpha X+\beta$, with $\alpha$ > $0$. How is $Y$ distributed?
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Sep 26, 2018
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Pooja Khatri
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ME 2014 Z score probability NormalDistribution
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?
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Jan 23, 2018
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Tuhin Dutta
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Gate_other_branch_question
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Oct 21, 2017
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akash.dinkar12
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4
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GATE2017119
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 ______________ .
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Feb 14, 2017
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Arjun
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any good link for studying about normal distribution
please provide a good link for normal distribution Thankyou
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Nov 25, 2016
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Akriti sood
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The The width of the slot of a duralumin is (in inches) normally distributed with μ=0.900 and σ=0.0030
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Nov 24, 2016
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ISRO200965
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 $\frac{1000}{\sqrt{2 \pi} } e^{25}$ $\frac{1000}{\sqrt{2 \pi} }$ $\frac{1000}{\sqrt{2 \pi} } e^{2.5}$ $\frac{400}{\sqrt{2 \pi} }$
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Jun 15, 2016
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jothee
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+28
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2
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GATE200829
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 $P (X ≤ 1) = P (Y ≥ 2)$ , the standard deviation of $Y$ is $3$ $2$ $\sqrt{2}$ $1$
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Sep 12, 2014
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Kathleen
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