In a study conducted to examine the quality of fish after 7 days in ice storage, ten raw fish of the same kind and approximately the same size were caught and prepared for ice storage. The fish were placed in ice storage at different times after being caught. A measure of fish quality was given to each fish after 7 days in ice storage. The sample data are shown below, where "Time" is the number of hours after being caught that the fish was placed in ice storage and "Fish Quality" is the measure given to each fish after 7 days in ice storage (higher numbers mean better quality). The least-squares regression equation is y=8.44250.1495x, where x is "Time" and y is predicted "Fish Quality." What is the residual for the first observation, (0,8.5)?

Time

0 0 235

6 7 9 11 2

Fish Quality

8.5 8.4 8.0 8.1 7.8 7.6 7.3 7.0 6.8 6.7