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प्रश्न
Choose the correct alternative:
In a discrete probability distribution, the sum of all the probabilities is always equal to
पर्याय
zero
one
minimum
maximum
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उत्तर
one
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संबंधित प्रश्न
Two balls are chosen randomly from an urn containing 6 red and 8 black balls. Suppose that we win ₹ 15 for each red ball selected and we lose ₹ 10 for each black ball selected. X denotes the winning amount, then find the values of X and number of points in its inverse images
Construct cumulative distribution function for the given probability distribution.
| X | 0 | 1 | 2 | 3 |
| P(X = x) | 0.3 | 0. | 0.4 | 0.1 |
A continuous random variable X has the following distribution function
F(x) = `{{:(0",", "if" x ≤ 1),("k"(x - 1)^4",", "if" 1 < x ≤ 3),(1",", "if" x > 3):}`
Find the Probability density function
Describe what is meant by a random variable
What are the properties of continuous random variable?
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A variable that can assume any possible value between two points is called
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If c is a constant, then E(c) is
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If the random variable takes negative values, then the negative values will have
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A variable which can assume finite or countably infinite number of values is known as
The probability distribution function of a discrete random variable X is
f(x) = `{{:(2k",", x = 1),(3k",", x = 3),(4k",", x = 5),(0",", "otherwise"):}`
where k is some constant. Find P(X > 2)
