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प्रश्न
c.d.f. of a discrete random variable X is
विकल्प
an identity function
a step function
an even function
an odd function
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उत्तर
a step function
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संबंधित प्रश्न
Suppose error involved in making a certain measurement is continuous r.v. X with p.d.f.
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P(x > 0)
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Find expression for c.d.f. of X
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| P(X=x) | k | 2k | 2k | 3k | k2 | 2k2 | 7k2+k |
k =
Solve the following :
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The probability distribution of a r.v. X is
| X = x | -3 | -2 | -1 | 0 | 1 |
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| x | 1 | 2 | 3 | 4 | 5 |
| F(x) | k2 | 2k2 | 3k2 | 2k | 3k |
Find P(2 ≤ X < 5)
If Xis a.r.v. with c.d.f F (x) and its probability distribution is given by
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A pair of dice numbered 1, 2, 3, 4, 5, 6 of a six-sided die and 1, 2, 3, 4 of a four-sided die is rolled and the sum is determined. Let the random variable X denote this sum. Then the number of elements in the inverse image of 7 is
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Suppose that X takes on one of the values 0, 1 and 2. If for some constant k, P(X = i) = kP(X = i – 1) for i = 1, 2 and P(X = 0) = `1/7`. Then the value of k is
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= 0, otherwise
The value of E(X) is ______
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| x | 0 | 1 | 2 | 3 | 4 | 5 |
| F(x) | 0.16 | 0.41 | 0.56 | 0.70 | 0.91 | 1.00 |
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| X = x | -4 | -2 | -1 | 0 | 2 | 4 | 6 | 8 |
| F(x) | 0.2 | 0.4 | 0.55 | 0.6 | 0.75 | 0.80 | 0.95 | 1 |
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| X = xi | 1 | 2 | 3 | 4 |
| P(X = xi) | 0.2 | 0.15 | 0.3 | 0.35 |
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