1.The medical community unanimously agrees on the health benefits of regular exercise, but are adults listening? During each of the past 15 years, a polling organization has surveyed americans about their exercise habits. In the most recent of these polls, slightly over half of all American adults reported that they exercise for 30 or more minutes at least three times per week. The following data show the percentages of adults who reported that they exercise for 30 or more minutes at least three times per week during each of the 15 years of this study.
Year
Percentage of Adults Who Exercise 30 or more minutes at least three times per week
1
41.5
2
45.2
3
47.1
4
45.6
5
46.7
6
44.7
7
47.9
8
50
9
48.2
10
49.4
11
50
12
52.4
13
51.1
14
54.9
15
52.5
a. Choose the correct time series plot.
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