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4.
A local gym wants to determine whether there is a significant difference between the average amount of time people spend exercising at the gym each month and the average amount of time people spend exercising outdoors each month. The data they collected is shown in the table.
January February March April May June
Gym 6.2 4.1 3.4 2.2 0.8 1.1
Outdoors 1.5 0.9 1.7 3.2 4.3 4.2
Difference
gym minus outdoors 4.7 3.2 1.7 Negative 1 Negative 3.5 Negative 3.1
How can the values in the Difference row be interpreted?
A. A positive difference means that more time was spent at the gym, and a negative difference means that more time was spent exercising outdoors.
B. A positive difference means that more time was spent exercising outdoors, and a negative difference means that more time was spent at the gym.
C. A positive difference means that the overall time spent exercising increased, and a negative difference means that the overall time spent exercising decreased.
D. A positive difference means that the overall time spent exercising decreased, and a negative difference means that the overall time spent exercising increased.
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