Super Appliances Pvt. Ltd. is a manufacturer of home appliances. Lately the number of faulty units in each production batch is increasing. The production manager is concerned about the number of man-hours spent by QC engineers in fault finding and fault correction. He has collected the following data from 10 production batches. No. of faulty units 11 13 12 12 18 17 14 21 16 19 Man-hours 4.35 5.58 4.85 4.65 5.92 6.40 5.83 7.69 6.59 4.43 a. Develop the regression equation. b. Calculate the predicted man-hours for 15 faulty units.  c. Find the coefficient of correlation. What is the relationship between the two variables ?  d. Find the coefficient of determination. Interpret the coefficient of determination.

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