The Top Speed Was Obtained for Five Cars with and for Five

Essay

The top speed was obtained for five cars with and for five other cars without STP gas treatment. Use a t test to find the effect of STP on speed.Independent variable___________Dependent variable___________ $$\begin{array} { r c } \text { With } & \text { Without } \\\hline 140 & 138 \\80 & 85 \\88 & 90 \\85 & 80 \\110 & 120\end{array}$$