Donell compared the hours students spent each day on social networks to the hours they spent on homework. his data is shown below. which statements are true? the mean number of hours spent on each activity are equal. there is a greater variability in the hours spent on social networks. the average student spends more time on homework than on social networks. the range for the number of hours spent on homework is greater. students are more consistent in the time spent on homework than the time spent on social networks.