One article states that the mean cost of a hotel room in Dearborn is equal to 101.9 dollars per night. Suppose we do not know the population standard deviation. Professor Liu has randomly sampled 54 hotel rooms. The sample mean is 122.1 dollars, and the sample standard deviation is 22.8 dollars. Professor Liu wants to test whether the mean hotel room cost is equal to 101.9 dollars. What is the test statistic