Statistics Unit Test

Question

6 of 156 of 15 Items

Question
Use the table to answer the question.

Group A 18 20 46 34 58 31 41
Group B 15 21 32 42 29 57 39The 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.

Answer 1

To find the mean time for Group A:
(18 + 20 + 46 + 34 + 58 + 31 + 41) / 7 = 37.4 minutes

To find the mean time for Group B:
(15 + 21 + 32 + 42 + 29 + 57 + 39) / 7 = 33.4 minutes

The mean time Group A spent shopping is 37.4 minutes.
The mean time Group B spent shopping is 33.4 minutes.

The mean times Group A and Group B spent shopping differ by 4.0 minutes.