To find the mean times each group spent shopping, we need to first sum up all the times each group spent shopping, and then divide by the number of people in each group.
Let's say Group A spent the following times shopping: 15, 20, 25, 30, 35
The sum of times for Group A = 15 + 20 + 25 + 30 + 35 = 125
Number of people in Group A = 5
Mean time for Group A = 125 / 5 = 25 minutes
Now, let's say Group B spent the following times shopping: 10, 15, 20, 35, 40
The sum of times for Group B = 10 + 15 + 20 + 35 + 40 = 120
Number of people in Group B = 5
Mean time for Group B = 120 / 5 = 24 minutes
The mean time Group A spent shopping is 25 minutes.
The mean time Group B spent shopping is 24 minutes.
The mean times Group A and Group B spent shopping differ by 1 minute.
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 minutes.
The mean time Group B spent
shopping is minutes.
The mean times Group A and Group B
spent shopping differ by minutes.
1 answer