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Suppose a coin is tossed 3 times. What is the probability of obtaining exactly one head?
in Data Science & Statistics by Diamond (58,513 points) | 203 views

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P(One head exactly) \(=\dfrac{1}{2} \times \dfrac{1}{2}  \times \dfrac{1}{2}  \times \dfrac{3}{8}  \)

The first \(\dfrac{1}{2} \) is the probability of getting a head. The other two halfs are the probability of NOT getting a head. The 3 is because the head could appear on either the first OR second OR third throw.
by Diamond (58,513 points)

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