Graclardslin Graclardslin
  • 03-02-2017
  • Mathematics
contestada

A random variable x is best described by a continuous uniform distribution from 20 to 45 inclusive. the mean of this distribution is

Respuesta :

LammettHash
LammettHash LammettHash
  • 06-02-2017
[tex]f_X(x)=\begin{cases}\dfrac1{45-20}=\dfrac1{25}&\text{for }20\le x\le45\\0&\text{otherwise}\end{cases}[/tex]

The mean is given by

[tex]\displaystyle\mathbb E(X)=\int_{-\infty}^\infty x f_X(x)\,\mathrm dx=\int_{20}^{45}\dfrac x{25}\,\mathrm dx=\dfrac{65}2[/tex]
Answer Link

Otras preguntas

can you guys help solve thissorry its so blurry omg​
what does good health in a country do?
Why is thinking about story structure important in a story?
solve the inequality 11) 18 = 3(3x – 6)
Who was the first pharaoh to unite the upper and lower kingdoms of Ancient Egypt?​
how does Nelson Mandela contribute to the power of his speech?
Which property can be used to show that if 16=9+7 then 9+7=16 ?
The probability that Rosetta is on time for a given class is 61 percent. If there are 56 classes during the semester, what is the best estimate of the number of
What role does a government have in mixed economy
What do you think the biggest difference is between an unreliable source and a reliable source?