Hello, good afternoon, someone could explain this problem to me, they ask me to use the tables of critical values ??of the t distribution, to make a graph and to draw a conclusion from the data obtained, I was using these formulas:

\fProblem data Formulas Substitution (n1-1)(s])+(n2-1)($2) (100-1) (0.36)+(100-1) (0.40) S, Without Cars ni+n2-2 100+100-2 n1= 100 estudiantes X1= 2.70 X1+X2 So = 0.38 07= 0.36 t = 1 `n1 n2 2.70+2.54 with Cars t = > t= 60.10 n2= 100 estudiantes 0.38 1 1 -+ 100 100 X2= 2.54 0'S = 0.40 Approach HO: p1-p2=0 H1: p1-p2+0