If p(x) = , the probability  is equal to:

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SSC CGL JSO Tier-II, 2018 (Statistics) Official Paper-III (Held On: 14 Sept, 2019)
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Answer (Detailed Solution Below)

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Detailed Solution

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Given

P(x) = {x/15 ; x = 1, 2, 3, ----5

           {0 ;        otherwise

Calculation

Probability P{1/2 < X < 5/2} that means, X = 1, 2 are only applicable

∴P(x = 1) = 1/15

∴ P(x = 2) = 2/15

⇒ P(x ) = p(x = 1) + p(x = 2)

⇒ p(x) = 1/15 + 2/15

The probability of p(x) is 3/15 or 1/5

 

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