A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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21:25 61 | 3
A © 100 JO
A survey asked people how
often they exceed speed
limits. The data are then
categorized into the following
contingency table of counts
showing the relationship
between age group and
response.
Exceed Limit if Possible?
Age
Not Always
Always
Total
Under 30
100
100
200
Over 30
40
160
200
Total
140
260
400
Among people age over 30,
what's the "risk" of always
exceeding the speed limit
Select one:
a. 0.40
b. 0.20
c. 0.33
d. 0.50
e. None of these
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Transcribed Image Text:21:25 61 | 3 A © 100 JO A survey asked people how often they exceed speed limits. The data are then categorized into the following contingency table of counts showing the relationship between age group and response. Exceed Limit if Possible? Age Not Always Always Total Under 30 100 100 200 Over 30 40 160 200 Total 140 260 400 Among people age over 30, what's the "risk" of always exceeding the speed limit Select one: a. 0.40 b. 0.20 c. 0.33 d. 0.50 e. None of these
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