Based on data collected over several​ sessions, a statistically minded trainer of office typists modeled the linear relationship between the number of hours of training a typist receives and the​ typist's speed​ (in words per​ minute) with the equation ModifyingAbove speed with caret equals 10.9 plus 5.7 (hour ). After some​ training, one of the typists was told that the speed he attained had a residual of 4.1 words per minute. How should he interpret​ this?