srutkowske366 srutkowske366

12-07-2017
Mathematics

contestada

Let the random variable x be equally likely to assume any of the values 1/11, 2/11, or 3/11. determine the mean and variance of x.

Respuesta :

Аноним Аноним

12-07-2017

mean of x = (1/11 + 2/11 +3/11) / 3 = 6/11 / 3 = 2/11

variance

1/11 - 2/11 = -1/11; 2/11 - 2/11 = 0 ; 3/11 - 2/11 = 1/11

(-1/11)^2 = 1/121 , 0^2 = 0 , (1/11)^2 = 1/121

1/121 + 0 + 1/121 = 2/121

Variance = 1/121 / 3 = 1 /363

Answer Link

Otras preguntas

which of the following statements is an example or evidence a historian could use to support a claim about the American Civil War? a. The South could never hav

A field with an area of 1800m² has the shape of a rectangle, whose length is 5m greater than its width. find the dimensions of this field. you probably have a m

you sold the most for your school's fundraiser so you get to enter the cash vault. There are $1, $5,$10 and $20 bills. The probability of picking a $1 bill is 4

A group of teenagers are fans of the show Fear Factor and continuously set up competitions with each other using similar challenges and following the rules of

what was happening to the rural population during industrialization

I need some info on silver.

What temperature scale has no negative numbers?

find the sum of the odd integers from 25 to 75,inclusive

Low taxes helped encourage small investors to provide money for new businesses.T or False if false writhe the correct answer.

Describe the relationship between ATP and ADP and the importance of this relationship within a cell.