Recall that the theoretical probability is independent of the observations we have in an experiment. This means that whatever Heather observes in her previous coin tosses does not change the theoretical probability.
Assuming that it is a fair coin, the probability of tossing heads or tails is the same. Since we have two possible outcomes, the probability of tossing tails is
[tex]P(T)=\frac{1}{2}[/tex]and this probability remains unchanged after several tosses.
