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A discrete probability distribution may be represented by
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संबंधित प्रश्न
Four fair coins are tossed once. Find the probability mass function, mean and variance for a number of heads that occurred
The time to failure in thousands of hours of an electronic equipment used in a manufactured computer has the density function
`f(x) = {{:(3"e"^(-3x), x > 0),(0, "eleswhere"):}`
Find the expected life of this electronic equipment
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Consider a game where the player tosses a six-sided fair die. If the face that comes up is 6, the player wins ₹ 36, otherwise he loses ₹ k2, where k is the face that comes up k = {1, 2, 3, 4, 5}. The expected amount to win at this game in ₹ is
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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
Let X be a random variable and Y = 2X + 1. What is the variance of Y if variance of X is 5?
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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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E[X – E(X)]2 is
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A discrete probability function p(x) is always non-negative and always lies between
