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प्रश्न
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A listing of all the outcomes of an experiment and the probability associated with each outcome is called
विकल्प
probability distribution
probability density function
attributes
distribution function
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उत्तर
probability distribution
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संबंधित प्रश्न
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
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
The probability density function of the random variable X is given by
`f(x) = {{:(16x"e"^(-4x), x > 0),(0, x ≤ 0):}`
find the mean and variance of X
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Four buses carrying 160 students from the same school arrive at a football stadium. The buses carry, respectively, 42, 36, 34, and 48 students. One of the students is randomly selected. Let X denote the number of students that were on the bus carrying the randomly selected student. One of the 4 bus drivers is also randomly selected. Let Y denote the number of students on that bus. Then E(X) and E(Y) respectively are
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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
The following table is describing about the probability mass function of the random variable X
| x | 3 | 4 | 5 |
| P(x) | 0.2 | 0.3 | 0.5 |
Find the standard deviation of x.
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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Which of the following is not possible in probability distribution?
