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1. Suppose that as a military psychologist you know that the population of sonar operators has a mean identification rat of 82 targets out of 100. You have just developed a new sonar training system that, you claim, will increase the number of targets correctly identified. Using the data from the 15 trainees listed below conduct a single sample t test to determine whether they perform significantly better than the population of sonar operators trained using the traditional method. Number of targets correctly identified 88 79 92 87 82 91 85 82 89 94 86 91 80 77 83 2. The scores obtained from the 6 students on an IQ test at Thorndyke University were as follows: i. X Person 1: 110 Person 2: 118 Person 3: 110 Person 4: 122 Person 5: 110 Person 6: 150 On average, do the population of undergraduates at Thorndike University have higher than average intelligence scores (IQ 100)? 3. A researcher claims that the average height of a woman aged 20 years or older is greater than the 1994 mean height of 63.7 inches, on the basis of data obtained from the Centers for Disease Control and Prevention’s Advance Data Report, No. 347. She obtains a random sample of 45 women and finds the sample mean height to be 63.9 inches with standard deviation of 3.5 inches. Test the researcher’s claim at using a 0.05 level of significance. 4. The manufacturer of a certain type of ATM machine reports that the mean ATM withdrawal is $60. The manager of a convenience store with an ATM machine thinks that the mean withdrawal is less than this amount. He obtains a simple random sample of 35 withdrawals over the past year and finds the sample mean to be $52 with a standard deviation of $13.