Expectation and variance of random variable

Assignment Help Basic Statistics

Reference no: EM1391627

Expectation and variance of a random variable

Let X be a random variable with the following probability distribution:

Value x of x P(X=x)
-30 0.35
-20 0.25
-10 0.05
0 0.30
10 0.05

Find the expectation E(X) and variance Var(x) of X

Reference no: EM1391627

Questions Cloud

Determine standard deviation and expected value : You're in charge of an experiment to evaluate a treatment which is advertised as being 90% effective at killing a particular insect. You plan an experiment in which the treatment is tested on 200 insects.

What is the required cycle time in minutes per unit : what is the required cycle time in minutes per unit if the daily production time is 480 minutes and the required daily output is 50 units?

Compute the free energy of transfer : Compute the free energy of transfer involved in the hypothetical transfer of electrons from complex 1 to complex four. The electron reduction potential of complex 1 in -0.32V.

Explain eligion-influenced culture : As we are reading The Inferno, it is useful to keep in mind that while Dante lived in a very religion-influenced culture (Church had important power at this time).

Expectation and variance of random variable : Expectation and variance of a random variable and let X be a random variable with the following probability distribution:

Determine and interpret the quartiles : We find that the carapace length of that adult male G. mollicoma is normally distributed with mean 18.14mm and standard deviation 1.76mm. Determine and interpret the quartiles for carapace length of the adult male G. mollicoma.

Completed forms from a particular department of an insurance : completed forms from a particular department of an insurance compnay were sampled daily to check the performance quality of that department

How to schedule potential meeting times in advance : If you had to schedule potential meeting times with her in advance, how frequently would you be eager to meet and explain her performance, while still taking more "hands-off" approach this time?

Compute the total number of atp molecules : Compute the total number of ATP molecules that will be produced upon complete breakdown of one C18 fatty acid molecule.

User Account

All Pages