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A discret random variable X has the foll...

A discret random variable `X` has the following probability distribution: `X :1234567` `P(X):c2c2c3cc^22c^27c^2+c` Find the value of `cdot` Also, find the mean of the distribution.

A

`(1)/(10)` and 3.66

B

`(1)/(20)` and 2.66

C

`(1)/(15)` ad 1.33

D

none of these

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The correct Answer is:
A
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