1

GATE CE 2015 Set 2

Numerical

+2

-0

The probability density function of a random variable, $$x$$ is
$$$\matrix{
{f\left( x \right) = {x \over 4}\left( {4 - {x^2}} \right)} & {for\,\,0 \le x \le 2 = 0} \cr
{ = 0} & {otherwise} \cr
} $$$

The mean, $${\mu _x}$$ of the random variable is __________.

The mean, $${\mu _x}$$ of the random variable is __________.

Your input ____

2

GATE CE 2015 Set 2

MCQ (Single Correct Answer)

+2

-0.6

Four cards are randomly selected from a pack of $$52$$ cards. If the first two cards are kings, what is the probability that the third card is a king?

3

GATE CE 2015 Set 1

Numerical

+2

-0

Consider the following probability mass function (p.m.f) of a random variable $$X.$$
$$$p\left( {x,q} \right) = \left\{ {\matrix{
q & {if\,X = 0} \cr
{1 - q} & {if\,X = 1} \cr
0 & {otherwise} \cr
} } \right.$$$

$$q=0.4,$$ the variance of $$X$$ is _______.

$$q=0.4,$$ the variance of $$X$$ is _______.

Your input ____

4

GATE CE 2014 Set 1

Numerical

+2

-0

The probability density function of evaporation $$E$$ on any day during a year in a watershed is given by
$$$f\left( E \right) = \left\{ {\matrix{
{{1 \over 5}} & {0 \le E \le 5\,mm/day} \cr
0 & {otherwise} \cr
} } \right.$$$

The probability that $$E$$ lies in between $$2$$ and $$4$$ $$mm/day$$ in the watershed is (in decimal) _______.

The probability that $$E$$ lies in between $$2$$ and $$4$$ $$mm/day$$ in the watershed is (in decimal) _______.

Your input ____

Questions Asked from Probability and Statistics (Marks 2)

Number in Brackets after Paper Indicates No. of Questions

GATE CE Subjects

Construction Material and Management

Geomatics Engineering Or Surveying

Engineering Mechanics

Transportation Engineering

Strength of Materials Or Solid Mechanics

Reinforced Cement Concrete

Steel Structures

Environmental Engineering

Engineering Mathematics

Structural Analysis

Geotechnical Engineering

Fluid Mechanics and Hydraulic Machines

General Aptitude