मराठी

The probability distribution of a discrete random variable X is given below: X 2 3 4 5 P(X) k5k k7k k9k k11k The value of k is ______. - Mathematics

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प्रश्न

The probability distribution of a discrete random variable X is given below:

X 2 3 4 5
P(X) `5/"k"` `7/"k"` `9/"k"` `11/"k"`

The value of k is ______.

पर्याय

  • 8

  • 16

  • 32

  • 48

MCQ
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उत्तर

The probability distribution of a discrete random variable X is given below:

X 2 3 4 5
P(X) `5/"k"` `7/"k"` `9/"k"` `11/"k"`

The value of k is 32.

Explanation:

We know that `sum_("i" = 1)^"n" "P"("X"_"i")` = 1

∴ `5/"k" + 7/"k" + 9/"k" + 11/"k"` = 1

`32/"k"` = 1

⇒ k = 32

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पाठ 13: Probability - Exercise [पृष्ठ २८४]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 12
पाठ 13 Probability
Exercise | Q 87 | पृष्ठ २८४
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