Multiple choice

The mean or average number of heads when we toss $10$ unbiased coins is

  1. $20$
  2. $10$
  3. $5$
  4. $15$
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C Correct answer
Explanation

For a binomial distribution (n=10, p=0.5), the mean is n * p = 10 * 0.5 = 5.

AI explanation

When using the binomial distribution for a coin toss, the probability of getting heads on a single unbiased coin is 1/2. The expected value, or mean number of heads, is calculated as the number of trials multiplied by the probability of success. Therefore, for 10 coins, the average number of heads is 10 multiplied by 1/2, which equals 5.

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