Group A 18 20 46 34 58 31 41
Group B 15 21 32 42 29 57 39
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. Round your answers to
one decimal place. (2 points)
Group A:
Mean = (18 + 20 + 46 + 34 + 58 + 31 + 41) / 7
Mean = 228 / 7
Mean = 32.6
Group B:
Mean = (15 + 21 + 32 + 42 + 29 + 57 + 39) / 7
Mean = 235 / 7
Mean = 33.6
Difference in mean times = 33.6 - 32.6
Difference in mean times = 1.0
Therefore, the difference in mean times spent shopping by Group B compared to Group A is 1.0 minutes.