The Times (In Minutes) to Assemble a Component for 3

Essay

The times (in minutes) to assemble a component for 3 different cell phones are listed below. Workers arerandomly selected. Test the hypothesis that there is no difference in the mean time for each cell phone. Use α =0.01. $$\begin{array} { c | c | c } \text { Phone 1 } & \text { Phone 2 } & \text { Phone 3 } \\\hline 32 & 40 & 28 \\32 & 29 & 25 \\31 & 38 & 29 \\30 & 33 & 31 \\33 & 32 & \\31 & 36 & \\& 35 &\end{array}$$