3. A professor was curious about her students' grade point averages (GPAS). She took a random sample of 15 students and found a mean GPA of 3.01 with a standard deviation of 0.534. a. For the given situation, identify the degrees of freedom and associated t-score for a 99% confidence interval. b. Using your answers from part (a), identify the margin of error for the given interval. c. Use your answer from part (c) to find the desired interval. Check your answer using the "Tinterval" computation on your calculator.

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