Question 6

The sales manager of a sporting goods chain store would like to use the numbers of rack to predict the sales of the golf clubs set. A random sample of 12 stores is selected with the following results.

a) Use the least square method to determine the simple linear regression equation for predicting the weekly sales of the golf clubs set by the numbers of rack.

b) Test at the 5% level of significance to determine whether the numbers of rack and weekly sales of the golf clubs set are positively related.

Store Numbers of rack Weekly sales (Set) 5 150 2 5 170 w 5 230 4 10 195 UI 10 250 10 270 15 240 15 280 15 290 10 20 265 11 20 295 12 20 320