Two-tailed Test using Statdisk to Compute T-tests

A local hospital states their average emergency room wait time to see a physician is less than 30 minutes. 
The standard deviation is not known. 
A survey of ten (10) randomly selected patient records is that the null hypothesis is that the mean wait time also is presumed to be 30 minutes. The data for each record surveyed 27, 31, 26, 30, 29, 30, 31, 28 30, 30 minutes.
Do a two-tailed t-test and describe how you would use the four-step hypothesis test process to answer a research question. Explain how using a t test could help you answer your research question.