Suppose the mean IQ score of people in a certain country is 103. Suppose the director of a college obtains a simple random sample of 42 students from that country and finds the mean IQ is 107.5 with a standard deviation of 13.6. O C. Do not reject Ho. There is sufficient evidence to conclude that the mean IQ score of people in the country is greater than 103 at the a = 0.10 level of significance. O D. Do not reject Ho. There is not sufficient evidence to conclude that the mean IQ score of people in the country is greater than 103 at the a = 0.10 level of significance. (b) Consider the hypotheses Ho: H = 104 versus H1: H > 104. Explain what the director is testing. Perform the test at the a = 0.10 level of significance. Write a conclusion for the test. Explain what the director is testing. Choose the correct answer below. A. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually greater than 104. O B. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually not equal to 104. O C. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually equal to 104. O D. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually not greater than 104. Find the test statistic for this hypothesis test. (Round to two decimal places as needed.)