Probability of Class 9
Question
An insurance company selected 2000 drivers at random in a particular city to find a relationship between age and accidents. The data obtained are given in the following table:
Age group of drivers (in years)
Number of accidents in one year
0
1
2
3
more than 3
18 – 29
30 – 50
Above 50
440
505
360
160
125
45
110
60
35
61
22
15
35
18
9
Find the probability of the following events for a driver selected at random from the city:
(i) being 18 – 29 years of age and having exactly 3 accidents in one year.
(ii) being 30 – 50 years of age and having one or more accidents in a year.
(iii) having no accident in one year.
An insurance company selected 2000 drivers at random in a particular city to find a relationship between age and accidents. The data obtained are given in the following table:
|
Age group of drivers (in years) |
Number of accidents in one year |
||||
|
0 |
1 |
2 |
3 |
more than 3 |
|
|
18 – 29 30 – 50 Above 50 |
440 505 360 |
160 125 45 |
110 60 35 |
61 22 15 |
35 18 9 |
Find the probability of the following events for a driver selected at random from the city:
(i) being 18 – 29 years of age and having exactly 3 accidents in one year.
(ii) being 30 – 50 years of age and having one or more accidents in a year. (iii) having no accident in one year.
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