According to a survey, the average American person exercises 3 hours per week. To test if the amount of exercise in New York City is less than the national average, a researcher decides to do a hypothesis test, at a 10% significance level. He surveys 15 New Yorkers randomly and asks them about their amount of exercise each week, on average. The population population is normally distributed. From the data, the sample mean time is 2.5 hours per week, and the sample standard deviation (s) is 1.1 hours. < 3; > 3. a = 0.1 (significance level) What is the test statistic (t-value) of this one-mean hypothesis test (with unknown)? . Round your final answer to two decimal places. Provide your answer below: Test Statistic = FEEDBACK