A survey asked people how often they exceed speed limit5. The data are then categorized into lhe
following contingency table of counts showing the relationship between age group and response.
Exceed Limit if Possible?
Age
Always
Not Always
Total
Under 30 100 100 200
Over 3D 40 160 200
Total
140
400
44. Among people with age over 30, what’s the "risk" of away i?•• e 2di° a) 0.20 b) 0.40 c) 0.33
the speed limit?
d) 0.50
45. Among people with age under 30 what are the odds thai they always exceed the speed limit?
a)1 to 2 b)2 to 1 )1 to 1 d)50%
46. What is the relative risk of akyays exceeding the speed limit for people under 30 compared to people over 30?
a) 2.5 b) 0.4
r) o.5 d) 30°4
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