X 18 19 20 21 22 P(x) 0.1 0.1 0.2 0.1 0.5 Given the discrete probability distribution above, determine the following: (a) P(x < 22) = (b) P(x ≤21) = (c) P(18 < x < 20) = ● — T ● ● ➖➖ …… ●●●

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