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प्रश्न
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A discrete probability distribution may be represented by
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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"):}`
If µ and σ2 are the mean and variance of the discrete random variable X and E(X + 3) = 10 and E(X + 3)2 = 116, find µ and σ2
A commuter train arrives punctually at a station every half hour. Each morning, a student leaves his house to the train station. Let X denote the amount of time, in minutes, that the student waits for the train from the time he reaches the train station. It is known that the pdf of X is
`f(x) = {{:(1/30, 0 < x < 30),(0, "elsewhere"):}`
Obtain and interpret the expected value of the random variable X
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On a multiple-choice exam with 3 possible destructive for each of the 5 questions, the probability that a student will get 4 or more correct answers just by guessing is
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If P(X = 0) = 1 – P(X = 1). If E[X] = 3 Var(X), then P(X = 0) 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
State the definition of Mathematical expectation using continuous random variable
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Value which is obtained by multiplying possible values of a random variable with a probability of occurrence and is equal to the weighted average is called
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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
