How we know that billy made a mistake in one or more

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Billy calculates the probability of getting 0, 1, 2, and 3 tails when flipping a coin three times. Explain how we know that Billy made a mistake in one or more calculations.

X= 0 1 2 3

P (X)= 1/8 3/8 2/8 1/8

Reference no: EM132495714

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