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Find the mean number of heads in three ...

Find the mean number of heads in three tosses of a fair coin.

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To find the mean number of heads in three tosses of a fair coin, we can follow these steps: ### Step 1: Identify the Random Variable Let \( X \) be the random variable that represents the number of heads obtained in three tosses of a fair coin. The possible values of \( X \) are \( 0, 1, 2, \) and \( 3 \). ### Step 2: Determine the Total Outcomes When tossing a fair coin three times, the total number of outcomes is \( 2^3 = 8 \). The outcomes can be listed as follows: - HHH (3 heads) ...
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