The mean IQ for the U.S. is 100 with a standard deviation of 15. A Troy statistics professor thinks Troy students are smarter than average, so he randomly samples 10 students and records the following IQ data to test his hypothesis. What is the test statistic (TS) for this problem (use .05 level of significance)? IQ: 95 100 105 110 115 100 105 110 105 105 O 2.74 O 1.812 1.833 .05 2.262 O

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