\BeginKnitrBlock{exercise}\iffalse{-91-79-110-101-45-115-105-100-101-100-32-116-101-115-116-115-93-}\fi{}<div class="exercise"><span class="exercise" id="exr:unnamed-chunk-77"><strong>(\#exr:unnamed-chunk-77)  \iffalse (One-sided tests) \fi{} </strong></span>Can you think of a weather problem that is one--sided but in the other direction?</div>\EndKnitrBlock{exercise}