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Q.

A survey was conducted by car manufacturing company in a metropolitan city on 1000persons having monthly income from Rs. 30,001 to Rs. 50,000. The data about the number of persons in various categories is as under.


 

Number of Cars

Monthly Income (Rs)

1

2

More than 2

30,001-40,000

400

50

25

40,001-50,000

100

300

125


Find the probability that a person selected at random in the income slab 40,001-50,000 have more than 2 cars.


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a

0.125

b

0.225

c

0.325

d

None of these 

answer is A.

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Detailed Solution

Given, total number of people surveyed =1000.
In the income slab 40,001-50,000, persons having more than 2 cars are 125.
We know that, P=Number of persons with more than 2 carsTotal number of persons surveyed
Then, probability =1251000.
=0.125
Hence, the correct option is 1.
 
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