The following table shows part of the probability

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The following table shows part of the probability distribution for a random variable x.

x f(x)

0 0.2

1 ?

2 0.15

3 ?

4 0.15

a. The mean of the above distribution is known to be 1.8 (i.e., E(x) = 1.8). Determine f(1) and f(3).

b. Compute the variance and the standard deviation for the above probability distribution.

Reference no: EM13629762

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