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प्रश्न
Choose the correct alternative:
A probability density function may be represented by
विकल्प
Table
Graph
Mathematical equation
Both (b) and (c)
उत्तर
Both (b) and (c)
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संबंधित प्रश्न
For the random variable X with the given probability mass function as below, find the mean and variance.
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`f(x) = {{:(3"e"^(-3x), x > 0),(0, "eleswhere"):}`
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f(x) = `{{:(3/x^4",", x ≥ 1),(0",", "otherwise"):}`
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The number of miles an automobile tire lasts before it reaches a critical point in tread wear can be represented by a p.d.f.
f(x) = `{{:(1/30 "e"^(- x/30)",", "for" x > 0),(0",", "for" x ≤ 0):}`
Find the expected number of miles (in thousands) a tire would last until it reaches the critical tread wear point
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Value which is obtained by multiplying possible values of a random variable with a probability of occurrence and is equal to the weighted average is called
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Prove that V(X + b) = V(X)
