In the long run, a fair coin lands heads up half of the time. {For this reason, a weighted coin is not fair.) We conducted a simulation in which each sample consists of 40 ips of a fair coin. Here is a simulated sampling distribution for the proportion of heads in 2,000 samples. Results ranged from 0.25 to 0.75. 0.0 0.2 0.4 0.6 0.0 1.0 proportionjeads The null hypothesis is that the coin is fair, which means p =O.50. We know the null hypothesis is true because we know the coin is fair. In the long run it lands heads up half of the time. We can see this in the sampling distribution because it has a center at 0.50