The professor swims. Here are Professor Moore’s times (in minutes) to swim 2000 yards and his pulse rate (in beats per minute) after swimming for 23 sessions in the pool:

Time: 34.12 35.72 34.72 34.05 34.13 35.72 36.17 35.57 Pulse: 152 124 140 152 146 128 136 144 Time: 35.37 35.57 35.43 36.05 34.85 34.70 34.75 33.93 Pulse: 148 144 136 124 148 144 140 156 Time: 34.60 34.00 34.35 35.62 35.68 35.28 35.97 Pulse: 136 148 148 132 124 132 139 You made a scatterplot of these data in Exercise 14.13 (page 303). The leastsquares regression line is pulse rate = 479.9 − (9.695 × time)

The next day’s time is 34.30 minutes. Predict the professor’s pulse rate. In fact, his pulse rate was 152. How accurate is your prediction?