A null and alternative hypothesis are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed.

: µ ≤ 13

:µ > 13

*Solution*

If the alternative hypothesis contain the not-equal-to inequality symbol, then it is a two-tailed test. If the alternative hypothesis contain the less-than inequality symbol, then it is a left-tailed test. If the alternative hypothesis contain the greater-then inequality symbol, then it is a right-tailed test.

Since the alternative hypothesis , has a greater-than inequality symbol, the hypothesis test is a right-tailed test.