6 Safari File Edit View History Bookmarks Window Help @ L2 5 )3 '53\" 71%.: Sat8145PM Q o ;4X = (d) Calculate the standard deviation of x. (Round your answer to four decimal places.) ax = tlres per car 6 Safari File Edit View History Bookmarks Window Help @ L2 5 )3 '53\" 71%- Sat8146PM Q 6 webassignmet V *7 Favorites Zimbra 9, Amazon 'l RCC I see 0 Google L USE (a) If you wanted to predict sale price and you could use either size or land-to-building ratio as the basis for making predictions, which would you use? 0 size 0 land-to-building ratio V (b) Based on your choice in part (a), nd the equation of the least-squares regression line you would use for predicting sale price. (Give answers to four decimal places.)