me such comparison , you would like to compare the subjects in Walking group with those in ting and Biking groups . Calculate the MS mm (the pooled variance ). Make sure to use the light degrees of freedom . State the null hypothesis using symbols (or words ). Conduct the statistic test using the appropn'ate standard error estimation Which critical value should you use to compare to the obtained statistic ?Indicate the degrees of freedom and Type 1 error rate based on your calculation in f (on p.7). Should you retain or reject your null hypothesis based on your analysis P