Numer of drivers who are 25 - 40 years
old and have exactly 2 accidents in one year
is = 50
So, P (driver is 25 - 40 years old with exactly
2 accidents)
1600 32
50
1
EXERCISE 15.1
1. In cricket, Rohit hits a century in 4 innings
out of 10 innings. Find the probability tha
he did not hit a century.
Answers
Answered by
1
Step-by-step explanation:
Total number of drivers = 2000
Number of trials = 2000
(1) The number of drivers having ages in 18 - 29 years and exactly 3 accidents in one year = 61.
Probability ( driver is 18 - 29 years old with exactly 3 accidents ) =
2000
61
.
(2) The number of drivers having ages in 30 - 50 years and with one or more accidents in one year = 125 + 60 + 22 + 18 = 225
Probability ( driver is 30 - 50 years old with with one or more accidents in one year ) =
2000
225
=
2
9
.
(3) The number of drivers having no accidents in one year = 440 + 505 + 360 = 1305
Probability ( number of drivers having no accidents in one year ) =
2000
1305
=
400
261
.
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