Anbspthe random variable x is the number of siblings of a

Reference no: EM13607869

(a). The random variable X is the number of siblings of a student selected at random from Professor Appiah's Introductory Statistics class. It's probability distribution is given in the following table.

x	0	1	2	3	4	5
P(X=x)	1/4	1/3	1/6	7/48	1/16	1/24

Find the following

(i). The expected value of the random variable X.

(ii).The standard deviation of the random variable X.

(iii).The variance of the random variable X.

(b).Let Y represents the number of Boys in families having three children. List all possible birth order permutations for families having three children and give the value of Y for each outcome and their associated probabilities [Hint: a family of three is made up of Boys and Girls]. Use your probability distribution to find the following

(i). The mean of the random variable Y.

(ii).The standard deviation of the random variable Y.

(iii).The variance of the random variable Y.

Reference no: EM13607869

Questions Cloud

The belt connecting these pulleys is represented by two : a pulley 250 mm in diameter drives a second pulley 1000 mm in diameter by means of a belt. the moment of inertia of the

On a multiple choice test of 13 questions each question has : on a multiple choice test of 13 questions each question has four 4 possible answers one of which is correct. for

An automobile is found to have a natural frequency of 20 : an automobile is found to have a natural frequency of 20 rads without passengers and 17.32 rads with passengers of mass

Exiting stream 3 is at 079 mpa and is know to contain a : high pressure steam steam 1 at a rate of 1000kgh initially at 3.5 mpa and 350 c is expanded in a turbine to obtain

Anbspthe random variable x is the number of siblings of a : a.nbspthe random variable x is the number of siblings of a student selected at random from professor appiahs

Determine the particles velocity and acceleration vectors : a particle a is pulled horizontally by a scotch-yoke with a constant velocity v along the elliptical slot given by the

Anbspthe random variable x is the number of siblings of a : a.nbspthe random variable x is the number of siblings of a student selected at random from professor appiahs

A piston cylinder device contains 05 kg of water at 10mpa : a piston cylinder device contains 0.5 kg of water at 1.0mpa and 400oc. now it is cooled to 1mpa in sat-v phase.

The initial pressure and finally compressed at the constant : a piston-cylinder device contains 0.15kg of air initially at 2mpa and 350oc. the air is first expanded isothermally to

User Account

All Pages