In order to test the hypothesis that drinking alcohol impairs a person's motor coordination, a researcher gave a motor coordination test to a sample of participants. who drank enough to reach 0.138 lalood alcohol level. On the motor coordination test, the p; for nondrinkers is 18.4. The motor coordination test results collected from the sample are listed bdow: Participant Motor ID Coordination {3001 16 [3002 14 [3003 1'? C1004 1? [3005 16 EDD? 1? EDGE 1 5 EDD? 13 [3010 19 [3011 12 [3012 14 _ Please answer the following question: [a]1. What is the null hypothesis? (:1 p: 18.4 CI |.J.= 18.4 CI '11;- 18.4 (:1 p at 18.4 Based on the scenario above, please answer the following question: lo} The critical t value = ___________ [the sure to enter your answer using the following format: "0.541", "1.312" etc.)