Use the definition of the mean and variance

Assignment Help Basic Statistics

Reference no: EM131422794

A random variable with given mean and standard deviation. Here is a simple way to create a random variable X that has mean μ and standard deviation σ: X takes only the two values μ - σ and μ + σ, each with probability 0.5.

Use the definition of the mean and variance for discrete random variables to show that X does have mean μ and standard deviation σ.

Reference no: EM131422794

Questions Cloud

Give n and x for given setting : In a random sample of 250 senior students from your college, 40% reported that they had taken a statistics course. Give n and X for this setting.

Muscle cells produce in addition to contraction : What are the three things that muscle cells produce in addition to contraction? Give examples. Describe the steps in the contraction of a muscle cell from the nerve impulse to the relaxation.

What stressors during middle adulthood might contribute : Individuals in middle adulthood experience both gains and losses in physical, cognitive, and psychosocial functioning. Middle adulthood can be a very positive experience. On the other hand, developmental issues associated with middle adulthood can..

Matrix of water effected aquatic organism evolution : How has the matrix of water effected aquatic organism evolution?

Use the definition of the mean and variance : Use the definition of the mean and variance for discrete random variables to show that X does have mean μ and standard deviation σ.

Evolution of sexual reproduction : What "trigggers" would you propose led to the evolution of sexual reproduction? And did it evolve only once, or multiple times separately?

What are the mean and standard deviation in inches : Transform the distribution of heights from centimeters to inches. - There are 2.54 centimeters in an inch. What are the mean and standard deviation in inches?

Examine the total points x on the cards : In blackjack, you are dealt two cards and examine the total points X on the cards (face cards count 10 points). You can choose to be dealt another card and compete based on the total points Y on all three cards.

Emergency department after being found unconscious : An elderly patient was admitted to the hospital through the Emergency Department after being found unconscious at home. The physician's admitting diagnosis was possible CVA. The patient was found to be in coma due to a cerebral artery occlusion wi..

User Account

All Pages