Random Samples of Individuals from Three Different Cities Were Asked

Essay

Random samples of individuals from three different cities were asked how much time they spend per day watching television. The results (in minutes) for the three groups are shown below. $$\begin{array} { c c c } \text { City I } & \text { City II } & \text { City III } \\260 & 178 & 211 \\280 & 190 & 190 \\240 & 220 & 250 \\260 & 240 & \\300 & &\end{array}$$ At α = .05, test to see if there is a significant difference in the averages of the three groups.