Question 9 (exe 2.56 10 points) Management of a local retail outlet in Australia wants to predict weekly online shopping sales. It administers an aptitude test to all sales people, where test scores range from 0 to 10 with greater scores indicating a higher aptitude. Test scores and weekly sales (in AU$000) are as follows: Test score 10 9 8 7 6 5 4 3 2 Weekly Sales(y) 23 61 17 30 21 20 510 44 31 17 . Compute the covariance . Compute the correlation between test score and weekly sales