Show transcribed image text 5.12 Exercise Table 5.3 gives the survival time in weeks of 30 brain tum。τ patients receiving four different treatments. Are the four treatments equally effective? Exercise Table 5.3 15 20 31 39 20 27 30 32+ 12 12 20+ 55+ 67+ 30+ 30 50+
5.12 Exercise Table 5.3 gives the survival time in weeks of 30 brain tum。τ patients receiving four different treatments. Are the four treatments equally effective? Exercise Table 5.3 15 20 31 39 20 27 30 32+ 12 12 20+ 55+ 67+ 30+ 30 50+