For each of the following binomial's experiments, state the value of p, the probability of success. A series of coin flips, where success is "heads".

p = 0.5 (assuming it is a fair coin)

For a series of coin flips, the probability of success would be the probability of getting a "heads". If the coin is fair, the probability of getting a "heads" would be 0.5 or 1/2.