Dark Mode

Recent questions tagged normal-distribution

1 vote

1 answer

1

canvas
The weight of a light bulb has an average of 12.5 grs. with a standard deviation of 2. Assume the variable is normally distributed. If an inspector select randomly a sample of 30 bulbs ¿what is the probability of the weight of one bulb falls between 10 and 15 grs.?

Ernestogld asked in Probability Mar 10

96 views

1 vote

0 answers

2

GATE Applied Mock Test
3 -1 1 2

yashpaneliya asked in Probability Jan 24, 2022

by yashpaneliya

351 views

1 vote

0 answers

3

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 asked in Unknown Category Dec 9, 2020

310 views

2 votes

1 answer

4

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 asked in Probability Dec 7, 2018

by Arjun

1.0k views

2 votes

2 answers

5

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

1.3k views

3 votes

1 answer

6

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

3.3k views

0 votes

2 answers

7

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

767 views

0 votes

2 answers

8

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

436 views

4 votes

2 answers

9

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

568 views

1 vote

1 answer

10

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

1.5k views

3 votes

1 answer

11

Gate_other_branch_question

akash.dinkar12 asked in Probability Oct 21, 2017

by akash.dinkar12

226 views

44 votes

5 answers

12

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

17.1k views

0 votes

0 answers

13

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

921 views

3 votes

1 answer

14

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

1.4k views

4 votes

2 answers

15

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

3.0k views

42 votes

3 answers

16

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

19.4k views

To see more, click for the full list of questions or popular tags.

Recent questions tagged normal-distribution