Solve the Problem $\alpha = 0.01$ To Test the Claim That $\mu > 2.85$

Essay

Solve the problem.
-Use a significance level of $\alpha = 0.01$ to test the claim that $\mu > 2.85$ . The sample data consist of 9 scores for which $x$ $= 3.13$ and $s = 0.55$ . Use the traditional method of testing hypotheses.