Average time on task 1 = [tex] \frac{3.4+4.1+6.5+8.1}{4}=5.5 [/tex] seconds
Average time on task 2 = [tex] \frac{3.5+4.3+6.8+8.3}{4}=5.7 [/tex] seconds
Average time on task 3 = [tex] \frac{4.3+4.1+6.5+7.9}{4}=5.7 [/tex] seconds
Average time on task 4 = [tex] \frac{2.9+4.6+6.6+7.1}{4} =5.3[/tex] seconds
Average time on task 5 = [tex] \frac{3.6+4.2+6.7+8.1}{4}=5.65 [/tex] seconds
