Solve the given question in proper steps and as soon as possible i don't have a lot of time :)Subject Name: Business Statistics

Q). No. 2 Max Marks 10 A market trader sells ball-point pens on his stall. He sells the pens for a different fixed price, x pens, in each of ten weeks. He notes the number of pens, y that he sells in each of these ten weeks. The results are shown in following table. Pens 12 08 10 13 07 08 10 06 09 11 Sales 101 92 110 120 90 82 93 75 91 105 a- Find the correlation coefficient between pen and sales and test the hypothesis that there is no relation between these variables. b- Find the regression equation of sales to pens. C- Estimate the weekly sells for 15 pens