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Questions › JNU › JNU SSS 2020 › Q13
1 markStatistics › Random variables and standard distributions › Random variables, PMFs, PDFs and CDFsModerateabout 2 min

JNU SSS 2020 Question 13: Random variables and standard distributions

Let δ\deltaδ > 0 be a constant and f(x)={δx(1−x),0<x<10,otherwisef(x) = \begin{cases} \delta x(1-x), & 0 < x < 1 \\ 0, & \text{otherwise} \end{cases}f(x)={δx(1−x),0,​0<x<1otherwise​ is a pdf. Find the P(X > 0.3).

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Let δ > 0 be a constant and f(x) = { δ x(1-x), 0 < x < 1; 0, otherwise } is a pdf. Find the P(X > 0.3). (A) 1 (B) 0.234 (C) 2 (D) 0.784

Also written as: Let delta > 0 be a constant and f(x) = { delta x(1-x), 0 < x < 1; 0, otherwise } is a pdf. Find the P(X > 0.3).

Random variables and standard distributions has come up 173 times in 7 exams since 2005.

What this question tests

This question is on Random variables, PMFs, PDFs and CDFs, part of Random variables and standard distributions in Statistics.

Describing a random variable by its mass, density or distribution function.

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