\BeginKnitrBlock{exercise}\iffalse{-91-69-120-112-108-111-114-105-110-103-32-116-104-101-32-66-105-110-111-109-97-108-32-100-105-115-116-114-105-98-117-116-105-111-110-93-}\fi{}<div class="exercise"><span class="exercise" id="exr:unnamed-chunk-35"><strong>(\#exr:unnamed-chunk-35)  \iffalse (Exploring the Binomal distribution) \fi{} </strong></span>What is the probability of finding exactly 9 heads when tossing a fair coin 25 times? What about 16 heads?</div>\EndKnitrBlock{exercise}