Question: 4.30. A random variable X may assume four values with probabilities (1 + 3x)/4, (1x)/4, (1 + 2x)/4, and (14x)/4. For what values of x

4.30. A random variable X may assume four values with probabilities (1 + 3x)/4, (1x)/4, (1 + 2x)/4, and (14x)/4. For what values of x is this a probability distribution?

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