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32. Mean and Variance of a Random Variable
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Q4 of 77 Page 32

If the probability distribution of a random variable X is given by

Write the value of k.


The probability distribution of X is:





We Know that



Therefore


⇒ 2k+4k+3k+k=1


⇒ 10k=1



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2

For what value of k the following distribution is a probability distribution?

3

If X denotes the number on the upper face of a cubical die when it is thrown, find the mean of X

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Find the mean of the following probability distribution:

6

If the probability distribution of a random variable X is as given below:

Write the value of P (X ≤ 2).


Questions · 77
32. Mean and Variance of a Random Variable
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