To find the mean times each group spent shopping, we first need to calculate the sum of the times for each group and then divide by the number of observations.
For Group A:
Sum = 18 + 20 + 46 + 34 + 58 + 31 + 41 = 248
Mean = Sum / Number of observations = 248 / 7 = 35.4 minutes
For Group B:
Sum = 15 + 21 + 32 + 42 + 29 + 57 + 39 = 235
Mean = Sum / Number of observations = 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.
The mean times Group A and Group B spent shopping differ by 1.8 minutes.
Statistics Unit Test 4 of 154 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.
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