The following table shows sample data relating to the number of study hours spent by students...

 

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The following table shows sample data relating to the number of study hours spent by students outside of class for a course in business statistics and their scores in an examination given at the end of the course. HoursofStudy ExaminationScore 27 32 18 22 20 16 34 23 88 92 72 77 64 61 84 70 (i) Find the regression equation of Examination Score on Hours of Study. (ii) Estimate the Examination Score of a student who devoted 25 hours of study to the course material. (iii) Use a suitable test to test the significance of the model at a 5% level of significance. (iv) Calculate the coefficient of correlation and comment on the relationship between "Hours of Study" and "Examination Score". (v) Calculate the Spearman's rank correlation coefficient for the above data. The following table shows sample data relating to the number of study hours spent by students outside of class for a course in business statistics and their scores in an examination given at the end of the course. HoursofStudy ExaminationScore 27 32 18 22 20 16 34 23 88 92 72 77 64 61 84 70 (i) Find the regression equation of Examination Score on Hours of Study. (ii) Estimate the Examination Score of a student who devoted 25 hours of study to the course material. (iii) Use a suitable test to test the significance of the model at a 5% level of significance. (iv) Calculate the coefficient of correlation and comment on the relationship between "Hours of Study" and "Examination Score". (v) Calculate the Spearman's rank correlation coefficient for the above data.

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i To find the regression equation of Examination Score on Hours of Study we will use the given data ... View the full answer