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प्रश्न
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A discrete probability distribution may be represented by
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Table
Graph
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उत्तर
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संबंधित प्रश्न
For the random variable X with the given probability mass function as below, find the mean and variance.
`f(x) = {{:(1/2 "e"^(x/2), "for" x > 0),(0, "otherwise"):}`
Two balls are drawn in succession without replacement from an urn containing four red balls and three black balls. Let X be the possible outcomes drawing red balls. Find the probability mass function and mean for X
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A random variable X has binomial distribution with n = 25 and p = 0.8 then standard deviation of X is
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If X is a binomial random variable with I expected value 6 and variance 2.4, Then P(X = 5) is
Let X be a continuous random variable with probability density function
`"f"_x(x) = {{:(2x",", 0 ≤ x ≤ 1),(0",", "otherwise"):}`
Find the expected value of X
What are the properties of Mathematical expectation?
How do you defi ne variance in terms of Mathematical expectation?
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Probability which explains x is equal to or less than a particular value is classified as
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A listing of all the outcomes of an experiment and the probability associated with each outcome is called
Prove that if E(X) = 0, then V(X) = E(X2)
