c. If one student's study time is 30 hours, then the predicted mark of that student will be: Answer rounded to two decimal places. d. What percentage of the variation in marks in a course is explained...

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Extracted text: c. If one student's study time is 30 hours, then the predicted mark of that student will be: Answer rounded to two decimal places. d. What percentage of the variation in marks in a course is explained by the regression model? Answer either in percentage or as a decimal (eg: 15.25%, or 0.1525)


Extracted text: Problem 2 To investigate the relationship between the marks (in 100) one receives in a course and the amount of time spent studying (weekly in hours) the subject, a random sample of 8 students who had enrolled in a certain course in the last semester was taken study time 48 26 45 42 47 36 | 50 40 marks 89 52 80 82 91 66 85 80 a. Determine the slope coefficient B1 for the regression of marks on study time. Answer rounded to three decimal places. b. Determine the y-intercept Bo for the regression of marks on study time. Answer rounded to two decimal places.