Question

Statistics Unit Test 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.
Answered by Lyla
35.4
33.6
they differ by 1.8
Answered by GPT 3.5
To find the mean time each group spent shopping, we first need to calculate the sum of the times for each group and then divide by the number of values in each group.

For Group A:
Sum of times = 18 + 20 + 46 + 34 + 58 + 31 + 41 = 228 minutes
Number of values = 7
Mean time for Group A = 228 / 7 = 32.6 minutes

For Group B:
Sum of times = 15 + 21 + 32 + 42 + 29 + 57 + 39 = 235 minutes
Number of values = 7
Mean time for Group B = 235 / 7 = 33.6 minutes

The mean time Group A spent shopping is 32.6 minutes.
The mean time Group B spent shopping is 33.6 minutes.

The difference in mean times between the two groups is:
33.6 - 32.6 = 1 minute

Therefore, the mean times Group A and Group B spent shopping differ by 1 minute.