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(b) The table below summarizes data on student performance in an Engineering Mathematics exam and the number of hours of revision attempted: Student ID

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(b) The table below summarizes data on student performance in an Engineering Mathematics exam and the number of hours of revision attempted: Student ID Exam score (100%) 1 80 2 75 3 93 4 57 5 45 6 62 7 68 8 95 9 65 10 50 Hours of revision 70 65 82 40 31 60 63 86 62 39 Calculate the correlation coefficient between exam score and hours of revision (5 marks). Test the hypothesis that there is no correlation between exam score and hours of revision (5 marks).

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