Question

A coin is tossed 4 times.find the mean,variance, and standard deviation of the number of heads that will be obtained.​

Answer 1

Answer:

Let X denote the number of heads in the four tosses of the coin. Then X is a random variable that can take the values 0, 1, 2, 3 or 4. Therefore, the mean and variance of the number of heads obtained are 2 and 1, respectively