Question: Find the expected value for the random variable. z 9 to 12 0.22 15 0.37 18 0.18 21 0.08 P(z) 0.15 E(z) = (Type an

Find the expected value for the random variable. z 9 to

Find the expected value for the random variable. z 9 to 12 0.22 15 0.37 18 0.18 21 0.08 P(z) 0.15 E(z) = (Type an integer or a decimal.)

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