Example $4$:

Construct one way ANOVA table for this experiment, then test the $H_0$:${}_1={}_2={}_3={}_4$ at level of significance $=0\mathrm{.}05$

$\backslash$table$[[$Treatments$,$Observations,Total$],[A,7,10,9,8,10,10,54],[$B$,5,6,4,8,7,6,36],[C,8,9,10,6,3,6,42],[$D$,5,6,4,3,7,5,30]]$

Is there difference between the resistances for ${}_1,{}_2,{}_3$ and ${}_4$ at level of significance $=0\mathrm{.}05$