Using the following information you are requested to (i) obtain the linear regression of Y on X (ii) Estimate the level of defective parts delivered when inspection expenditure amounts to Rs.28,000 ΣX=424, ΣY=363, ΣX2 =21926, ΣY2 =15123, ΣXY=12815, N=10. Here X is the expenditure on inspection, Y is the defective parts delivered.