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 | 39|
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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.

Answer 1

[AI-generated answer — Bot GPT 3.5]

Mean time for Group A: (18 + 20 + 46 + 34 + 58 + 31 + 41)/7 = 33.1 minutes

Mean time for Group B: (15 + 21 + 32 + 42 + 29 + 57 + 39)/7 = 31.3 minutes

Difference in mean times: 33.1 - 31.3 = 1.8 minutes

Therefore, the mean time for Group A is 33.1 minutes, the mean time for Group B is 31.3 minutes, and the difference in mean times is 1.8 minutes.

Answer 2

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 3

[AI-generated answer — Bot GPT 3.5]

The mean time Group A spent shopping is 33.1 minutes. The mean time Group B spent shopping is 31.3 minutes. The mean times Group A and Group B spent shopping differ by 1.8 minutes.

Answer 4

The stem-and-leaf plot shows the speeds of the fastest steel roller coasters in Europe. The table shows the speeds of the fastest steel roller coasters in North America.

Speeds of the Fastest Steel Roller Coasters in Europe (in miles per hour)
| Stem | Leaf |
| 7 | 4555 |
| 8 | 00348 |
| 9 | 9 |
| 11 | 1 |
Key:7|4=74 miles per hour
Speeds of the Fastest Steel Roller Coasters in North America (in miles per hour)
Canada | | 90 128 91 |
U.S. | | 93 120 100 |
Mexico | | 95 92 85 |
Find the range of the speeds of the fastest steel roller coasters on both continents.
The range of the speeds of the fastest steel roller coasters in Europe is what mph.
The range of the speeds of the fastest steel roller coasters in North America is what mph.