Ornithologists, scientists who study birds, tag sparrow hawks in 13 different colonies to study their population. They gather data for the percent of new sparrow hawks in each colony and the percent of those that have returned from migration.

Percent return: 7777; 6666; 8383; 5454; 7373; 6464; 5252; 4040; 6666; 4545; 6060; 4646; 3838 Percent new: 66; 55; 88; 1414; 1212; 1515; 1616; 1717; 1818; 1818; 1515; 2020; 20

(a) What is the equation of the least-squares regression line? Use xx to represent percent return. Round any calculated values to twodecimal places.