P(error) = 0.6 * 0.1 + 0.4 * 0.1 = 0.1

E[Y(t)] = E[X(t)] * |H(0)| = 0

P(X = 50) = (100 choose 50) * (0.5)^50 * (0.5)^50 ≈ 0.08

Best regards

A coin is tossed 100 times. What is the probability of getting exactly 50 heads?

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