The table shows the times, in minutes, spent shopping by two different groups. First, find the mean times each group spent shopping. Then determine the difference in the mean times.

Answer 1

Group 1:
10, 15, 20, 25, 30
Mean = (10+15+20+25+30)/5 = 20 minutes

Group 2:
5, 10, 15, 20, 25, 30
Mean = (5+10+15+20+25+30)/6 = 17.5 minutes

Difference in mean times = 20 - 17.5 = 2.5 minutes

Therefore, the difference in mean times spent shopping between the two groups is 2.5 minutes.