The probability distribution of a random...

The probability distribution of a random variable X is given below. If its mean is 4.2. then find the values of a and b.

A

(a) 0.3, 0.2

B

(b) 0.1, 0.4

C

(c) 0.1, 0.2

D

(d) 0.2, 0.1

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The correct Answer is:

C

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