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प्रश्न
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
बेरीज
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उत्तर
W.K.T Probability density Function
f(x) = `("d"["F"(x)])/("d"x)`
f(x) = `{{:(1/8, "if" 0 ≤ x < 1),(1/8, "if" ≤ x < 2),(1/12, "if" 2 ≤ x 3),(0, "elsewhere"):}`
X is not discrete since f is not a step function.
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