The PDF of babies’ age is defined as , The 5th decile point of X is:

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SSC CGL Tier-II ( JSO ) 2019 Official Paper ( Held On : 17 Nov 2020 )
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Answer (Detailed Solution Below)

Option 1 : 1
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Detailed Solution

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Expalantion

For the 5th Decile = 

Calculation

 = = ¾(2x2/2 – x3/3)0d5

⇒ 5/10 = ¾(2D52/2 – D53/3)

Putting the values of D5, Put the value of D5 in the equation, the value which satisfy the equation will become the answer of this question

Option 1 – (1)

⇒ ¾(2 × (1)2/2(1)3/3)

⇒ ¾(1 – 1/3

⇒ ¾(2/3) = ½ or 5/10

∴ Option 1 satisfy the equation hence 5th decile point of X is 1                                                                                     

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