A professor claims that his students' average score on the first exam of the semester is different than the average score orn the second exam. The professor has several large classes, so he selects a...

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Extracted text: A professor claims that his students' average score on the first exam of the semester is different than the average score orn the second exam. The professor has several large classes, so he selects a random sample of students and compares their scores on the two exams. Find the test statistic and degrees of freedom for an appropriate hypothesis test using the data set below. Let the difference for each student be computed as đ second exam-first exam. Assume that the scores are normally distributed. Round the test statistic to three decimal places. Second exam (percent) 78 86 76 72 91 72 68 90 First exam (percent) 75 84 68 94 70 65 94 T Help Copy to Clipboard Download CSV Provide your answer below