The table shows the times in minutes spent shopping by two different groups find first find the mean times each group spent shopping then determine the difference in the meantime round your answer to one decimal place
Group 1: 40, 35, 45, 50, 42
Mean time for Group 1 = (40 + 35 + 45 + 50 + 42) / 5 = 212 / 5 = 42.4 minutes
Group 2: 30, 25, 35, 40, 28
Mean time for Group 2 = (30 + 25 + 35 + 40 + 28) / 5 = 158 / 5 = 31.6 minutes
Difference in mean time = 42.4 - 31.6 = 10.8 minutes
Therefore, the difference in the mean time each group spent shopping is 10.8 minutes.