Consider a statistical experiment where you flip two coins and you are interested in how many heads flipped. (1) Write a description of the random variable describing this experiment, i.e. X = ”some description” (2) Write a probability distribution describing the probability of the outcomes of this event. (3) What is the expected number of heads flipped?
Consider a statistical experiment where you flip two coins and you are interested in how many heads flipped.
(1) Write a description of the random variable describing this experiment, i.e. X = ”some description”
(2) Write a
(3) What is the expected number of heads flipped?
(4) What is the variance and standard deviation of the number of heads flipped?
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(1) Random variable : A random variable is defined as a function which assigns numerical value to every possible outcomes of a random experiment.
For example : Number of times getting a six when in a random experiment of rolling a die, Number of times drawing a red ball from the basket containing red ball and white ball, Number of goals in a soccer match etc.
The domain of a random variable is a complete sample space and the range of a random variable is a set of real numbers.
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