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प्रश्न
Choose the correct alternative:
A set of numerical values assigned to a sample space is called
विकल्प
random sample
random variable
random numbers
random experiment
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उत्तर
random variable
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संबंधित प्रश्न
In a pack of 52 playing cards, two cards are drawn at random simultaneously. If the number of black cards drawn is a random variable, find the values of the random variable and number of points in its inverse images
A six sided die is marked ‘2’ on one face, ‘3’ on two of its faces, and ‘4’ on remaining three faces. The die is thrown twice. If X denotes the total score in two throws, find the values of the random variable and number of points in its inverse images
Two coins are tossed simultaneously. Getting a head is termed a success. Find the probability distribution of the number of successes
What do you understand by continuous random variable?
Explain the terms probability Mass function
Choose the correct alternative:
If c is a constant, then E(c) is
Choose the correct alternative:
If the random variable takes negative values, then the negative values will have
Choose the correct alternative:
The height of persons in a country is a random variable of the type
Let X be a random variable with a cumulative distribution function.
F(x) = `{{:(0",", "if" x < 0),(x/8",", "if" 0 ≤ x ≤ 1),(1/4 + x/8",", "if" 1 ≤ x ≤ 2),(3/4 + x/12",", "if" 2 ≤ x < 3),(1",", "for" 3 ≤ x):}`
Is X a discrete random variable? Justify your answer
Consider a random variable X with p.d.f.
f(x) = `{(3x^2",", "if" 0 < x < 1),(0",", "otherwise"):}`
Find E(X) and V(3X – 2)
