To find the mean time spent shopping for each group, you add up all the times and divide by the number of data points.
For Group A:
(18 + 20 + 46 + 34 + 58 + 31 + 41) / 7 = 248 / 7 ≈ 35.4 minutes
For Group B:
(15 + 21 + 32 + 42 + 29 + 57 + 39) / 7 = 235 / 7 ≈ 33.6 minutes
The mean time Group A spent shopping is 35.4 minutes.
The mean time Group B spent shopping is 33.6 minutes.
To find the difference in the mean times:
35.4 - 33.6 = 1.8 minutes
The mean times Group A and Group B spent shopping differ by 1.8 minutes.
Use the table to answer the question.
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)
The mean time Group A spent shopping is blank minutes.
The mean time Group B spent shopping is blank minutes.
The mean times Group A and Group B spent shopping differ by blank minutes.
1 answer
1 answer