OPMT 1197 Quiz 3? ?? You are concerned that the incidence of smoking is increasing among young people. You create t
Quiz 3
OPMT 1197 Quiz 3
You are concerned that the incidence of smoking is increasing among young people. You create the table below that shows student ages in the columns and smokers or non-smokers in the rows.
Ages
18 – 24
25 – 29
30 – 34
Total
Non-smoker
96
63
10
169
Smoker
24
7
0
31
Total
120
70
10
200
(a) Overall, what percentage of students smoke? [3 mark]
ANSWER (Percentage, 2 decimal places):
(b) What percentage of 18 to 24 year olds smoke? [3 marks]
ANSWER (Percentage, 2 decimal places):
(c) If a student is 25 years or older, what is the probability he/she is a non-smoker? [3]
ANSWER (4 decimal places):
(d) If a student smokes, what is the probability he/she is under age 30? [3 marks]
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