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: 75; 66; 82; 55; 73; 63; 52; 43; 65; 42; 60; 46; 38 Percent new: 6; 5; 8; 13; 12; 15; 16; 17;18; 18; 16;20; 20 Enter the data into your calculator and make a scatter plot. Use your calculator's regression function to find the equation of the least-squares regression line. Add this to your scatter plot. (a) What is the equation of the least-squares regression line? Use I to represent percent return. Round any calculated values t two decimal places. (b) Explain in words what the slope and y-intercept of the regression line tell us. Round your answer to two decimal places. The slope of the least squares line is Number For each percentage increase in returning birds, the percentage of new birds in the colony Click for List by Number The y-intercept of the least squares line is Number When there are no returning sparrow hawks, there will be almost Number hawks. new sparrow