Statistics question based on hypothesis testing and the P value

The IRS claims that the mean wait time for callers during a recent tax filing season was at most 7 minutes.  A random sample of 11 callers has a mean wait time of 8.7 minutes and a standard deviation of 2.7 minutes.  IS there enough evidence to reject the claim at alpha = 0.10?  Notice that the sample size is < 30.  That will determine whether you use the t-test or the z-test.  See p. 377.

Show your hand calculations OR explain how you used Excel to solve.