Number 11

Annual measurements of the number of powerboat registrations (in thousands) and the number of manatees killed by powerboats in Florida were collected over the 14 years 1977-1990. A scatterplot of the data, least squares regression line, and correlation coefficient follow. Manatee Deaths 450 500 550 600 650 700 Powerboat Registrations (in thousands) Correlation: r = 0.943 Regression line: y = - 41.43 + 0.12x 10) What is the predicted number of manatee deaths for a year with 600,000 32 10) powerboat registrations? 11) The year 1984 had 559,000 powerboat registrations and 34 manatee deaths. 11) Calculate the residual for this observation