The following table shows part of the probability distribution for a random variable x. X 0...

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The following table shows part of the probability distribution for a random variable x. X 0 1 2 3 4 f(x) 0.15 ? 0.2 ? 0.3 (a) The mean of the above distribution is known to be 2.35 (i.e., E(x) = 2.35). Determine f(1) and f(3). f(1) = f(3) = (b) Compute the variance and the standard deviation for the above probability distribution. (Round your standard deviation to three decimal places.) variance standard deviation The following table shows part of the probability distribution for a random variable x. X 0 1 2 3 4 f(x) 0.15 ? 0.2 ? 0.3 (a) The mean of the above distribution is known to be 2.35 (i.e., E(x) = 2.35). Determine f(1) and f(3). f(1) = f(3) = (b) Compute the variance and the standard deviation for the above probability distribution. (Round your standard deviation to three decimal places.) variance standard deviation