The figure below illustrates the prevalence of cigarette smoking (yes/no) according to age in a hypothetical population. lence of smoking (%) 40 35 30 25 20 15 18 16

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The figure below illustrates the prevalence of cigarette smoking (yes/no) according to age in a
hypothetical population.
Prevalence of smoking (%)
40
35
30
25
20
15
10
5
Ln
0
18
16
li
18-30
31-40
12
41-50
8
51-60
6
3
61-70 71 & above
Age (years)
12
All ages
A) Interpret the graph in not more than 100 words
B) If you were to test the null hypothesis that "the prevalence of smoking is the same across
the six age groups, what statistical test would you use and why?
Transcribed Image Text:The figure below illustrates the prevalence of cigarette smoking (yes/no) according to age in a hypothetical population. Prevalence of smoking (%) 40 35 30 25 20 15 10 5 Ln 0 18 16 li 18-30 31-40 12 41-50 8 51-60 6 3 61-70 71 & above Age (years) 12 All ages A) Interpret the graph in not more than 100 words B) If you were to test the null hypothesis that "the prevalence of smoking is the same across the six age groups, what statistical test would you use and why?
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