just short answered

According to the Nielsen Media Research, children (ages 2-11) spend an average of 21 hours 30 minutes watching television per week while teens (ages 12-17) spend an average of 20 hours 40 minutes. Based on the sample statistics obtained below, is there sufficient evidence to conclude that the average watching times of children group is significantly greater than teens group? Assume the two populations are normally distributed and have equal variances.