Group 1 is infected cows
Group 2 is uninfected cows

n1=19

n2=26 
     
y1=c(50,130,100,130,50,140,129,76,138,69,70,144,70,130,70,150,251,110,120)

y2=c(60, 74, 37, 45, 75, 40, 50,50, 146, 70, 50, 84, 60, 149, 50, 90, 259, 40, 90, 101, 70, 90, 254, 130, 80, 40)