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प्रश्न
Choose the correct alternative:
Two coins are to be flipped. The first coin will land on heads with probability 0.6, the second with Probability 0.5. Assume that the results of the flips are independent and let X equal the total number of heads that result. The value of E[X] is
विकल्प
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उत्तर
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संबंधित प्रश्न
Given the p.d.f. of a continuous r.v. X ,
f (x) = `x^2/ 3` , for –1 < x < 2 and = 0 otherwise
Determine c.d.f. of X hence find P( X > 0)
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Verify whether f(x) is a p.d.f.
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Identify the random variable as discrete or continuous in each of the following. Identify its range if it is discrete.
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Solve the following problem :
Identify the random variable as discrete or continuous in each of the following. Identify its range if it is discrete.
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| x | 1 | 2 | 3 | 4 | 5 |
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F(x) = `{{:(0, "for" - oo < x < 0),(1/2, "for" 0 ≤ x < 1),(3/5, "for" 1 ≤ x < 2),(4/5, "for" 2 ≤ x < 4),(9/5, "for" 3 ≤ x < 4),(1, "for" ≤ x < oo):}`
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Choose the correct alternative:
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Let X = time (in minutes) that lapses between the ringing of the bell at the end of a lecture and the actual time when the professor ends the lecture. Suppose X has p.d.f.
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