In: Statistics and Probability
We are given that the probability of landing heads in a coin toss is ½. If the coin is fair, then the probability of getting head or tail is equal to ½. If all coins or pennies are fair, then the probability of landing heads will be ½ or approximately equal ½. Although we will not get exactly half of the heads from all coins flipped at the same time, but if we repeated the experiment several times, then the expected value for getting head becomes ½. So, according to sampling distribution rule, the proportion of getting head will approach probability ½ as we increase the number of trials.