sydneelittle3851 sydneelittle3851

02-07-2018
Mathematics

contestada

Let the random variable x be equally likely to assume any of the values 1/12, 1/6, or 1/4. determine the mean and variance of x.

Respuesta :

sqdancefan sqdancefan

02-07-2018

The mean of x is
(1/3)(1/12 + 1/6 + 1/4) = 1/6

The mean of the squares is
(1/3)((1/12)² + (1/6)² + (1/4)²) = 7/216

The variance is the difference between the mean square and the square of the mean.
7/216 -(1/6)² = 1/216

The mean of x is 1/6.
The variance of x is 1/216.

Answer Link

Otras preguntas

Write the correct ratio (fraction) for each triangle.

Nectar in a Sieve What’s the correct option?

The side length of a square is modeled by s=A, where A is the area of the square. Graph the function. What is the side length of a square with an area of 35 squ

What causes limp Celery to get crispy when soaked in freshwater

Which statement is true regarding the Yellowstone National Park? OPTIONS There are diverse habitats, from open meadows of wildflowers to thick pine forests. The

Good morning!what do u mean by introverted person?

A rectangle has sides measuring (6x + 4) units and (2x + 11) units. Part A: What is the expression that represents the area of the rectangle? Show your work.

Dr. Banner monitored the decay of a new type of recyclable material he developed for his gamma radiation study. He noted that the decay of the material could be

Solve for x x= 4x+2 3x+24

Question 2: In Beethoven's day, the composer was supreme. Every note that he wrote was expected to be played in a particular way. But times have changed. Along